js/00-zepto.js

   1 /* Zepto v1.1.4-80-ga9184b2 - zepto event data ie - zeptojs.com/license */
   2
   3 var Zepto = (function() {
   4   var undefined, key, $, classList, emptyArray = [], concat = emptyArray.concat, filter = emptyArray.filter, slice = emptyArray.slice,
   5     document = window.document,
   6     elementDisplay = {}, classCache = {},
   7     cssNumber = { 'column-count': 1, 'columns': 1, 'font-weight': 1, 'line-height': 1,'opacity': 1, 'z-index': 1, 'zoom': 1 },
   8     fragmentRE = /^\s*<(\w+|!)[^>]*>/,
   9     singleTagRE = /^<(\w+)\s*\/?>(?:<\/\1>|)$/,
  10     tagExpanderRE = /<(?!area|br|col|embed|hr|img|input|link|meta|param)(([\w:]+)[^>]*)\/>/ig,
  11     rootNodeRE = /^(?:body|html)$/i,
  12     capitalRE = /([A-Z])/g,
  13
  14     // special attributes that should be get/set via method calls
  15     methodAttributes = ['val', 'css', 'html', 'text', 'data', 'width', 'height', 'offset'],
  16
  17     adjacencyOperators = [ 'after', 'prepend', 'before', 'append' ],
  18     table = document.createElement('table'),
  19     tableRow = document.createElement('tr'),
  20     containers = {
  21       'tr': document.createElement('tbody'),
  22       'tbody': table, 'thead': table, 'tfoot': table,
  23       'td': tableRow, 'th': tableRow,
  24       '*': document.createElement('div')
  25     },
  26     readyRE = /complete|loaded|interactive/,
  27     simpleSelectorRE = /^[\w-]*$/,
  28     class2type = {},
  29     toString = class2type.toString,
  30     zepto = {},
  31     camelize, uniq,
  32     tempParent = document.createElement('div'),
  33     propMap = {
  34       'tabindex': 'tabIndex',
  35       'readonly': 'readOnly',
  36       'for': 'htmlFor',
  37       'class': 'className',
  38       'maxlength': 'maxLength',
  39       'cellspacing': 'cellSpacing',
  40       'cellpadding': 'cellPadding',
  41       'rowspan': 'rowSpan',
  42       'colspan': 'colSpan',
  43       'usemap': 'useMap',
  44       'frameborder': 'frameBorder',
  45       'contenteditable': 'contentEditable'
  46     },
  47     isArray = Array.isArray ||
  48       function(object){ return object instanceof Array }
  49
  50   zepto.matches = function(element, selector) {
  51     if (!selector || !element || element.nodeType !== 1) return false
  52     var matchesSelector = element.webkitMatchesSelector || element.mozMatchesSelector ||
  53                           element.oMatchesSelector || element.matchesSelector
  54     if (matchesSelector) return matchesSelector.call(element, selector)
  55     // fall back to performing a selector:
  56     var match, parent = element.parentNode, temp = !parent
  57     if (temp) (parent = tempParent).appendChild(element)
  58     match = ~zepto.qsa(parent, selector).indexOf(element)
  59     temp && tempParent.removeChild(element)
  60     return match
  61   }
  62
  63   function type(obj) {
  64     return obj == null ? String(obj) :
  65       class2type[toString.call(obj)] || "object"
  66   }
  67
  68   function isFunction(value) { return type(value) == "function" }
  69   function isWindow(obj)     { return obj != null && obj == obj.window }
  70   function isDocument(obj)   { return obj != null && obj.nodeType == obj.DOCUMENT_NODE }
  71   function isObject(obj)     { return type(obj) == "object" }
  72   function isPlainObject(obj) {
  73     return isObject(obj) && !isWindow(obj) && Object.getPrototypeOf(obj) == Object.prototype
  74   }
  75   function likeArray(obj) { return typeof obj.length == 'number' }
  76
  77   function compact(array) { return filter.call(array, function(item){ return item != null }) }
  78   function flatten(array) { return array.length > 0 ? $.fn.concat.apply([], array) : array }
  79   camelize = function(str){ return str.replace(/-+(.)?/g, function(match, chr){ return chr ? chr.toUpperCase() : '' }) }
  80   function dasherize(str) {
  81     return str.replace(/::/g, '/')
  82            .replace(/([A-Z]+)([A-Z][a-z])/g, '$1_$2')
  83            .replace(/([a-z\d])([A-Z])/g, '$1_$2')
  84            .replace(/_/g, '-')
  85            .toLowerCase()
  86   }
  87   uniq = function(array){ return filter.call(array, function(item, idx){ return array.indexOf(item) == idx }) }
  88
  89   function classRE(name) {
  90     return name in classCache ?
  91       classCache[name] : (classCache[name] = new RegExp('(^|\\s)' + name + '(\\s|$)'))
  92   }
  93
  94   function maybeAddPx(name, value) {
  95     return (typeof value == "number" && !cssNumber[dasherize(name)]) ? value + "px" : value
  96   }
  97
  98   function defaultDisplay(nodeName) {
  99     var element, display
 100     if (!elementDisplay[nodeName]) {
 101       element = document.createElement(nodeName)
 102       document.body.appendChild(element)
 103       display = getComputedStyle(element, '').getPropertyValue("display")
 104       element.parentNode.removeChild(element)
 105       display == "none" && (display = "block")
 106       elementDisplay[nodeName] = display
 107     }
 108     return elementDisplay[nodeName]
 109   }
 110
 111   function children(element) {
 112     return 'children' in element ?
 113       slice.call(element.children) :
 114       $.map(element.childNodes, function(node){ if (node.nodeType == 1) return node })
 115   }
 116
 117   function Z(dom, selector) {
 118     var i, len = dom ? dom.length : 0
 119     for (i = 0; i < len; i++) this[i] = dom[i]
 120     this.length = len
 121     this.selector = selector || ''
 122   }
 123
 124   // `$.zepto.fragment` takes a html string and an optional tag name
 125   // to generate DOM nodes nodes from the given html string.
 126   // The generated DOM nodes are returned as an array.
 127   // This function can be overriden in plugins for example to make
 128   // it compatible with browsers that don't support the DOM fully.
 129   zepto.fragment = function(html, name, properties) {
 130     var dom, nodes, container
 131
 132     // A special case optimization for a single tag
 133     if (singleTagRE.test(html)) dom = $(document.createElement(RegExp.$1))
 134
 135     if (!dom) {
 136       if (html.replace) html = html.replace(tagExpanderRE, "<$1></$2>")
 137       if (name === undefined) name = fragmentRE.test(html) && RegExp.$1
 138       if (!(name in containers)) name = '*'
 139
 140       container = containers[name]
 141       container.innerHTML = '' + html
 142       dom = $.each(slice.call(container.childNodes), function(){
 143         container.removeChild(this)
 144       })
 145     }
 146
 147     if (isPlainObject(properties)) {
 148       nodes = $(dom)
 149       $.each(properties, function(key, value) {
 150         if (methodAttributes.indexOf(key) > -1) nodes[key](value)
 151         else nodes.attr(key, value)
 152       })
 153     }
 154
 155     return dom
 156   }
 157
 158   // `$.zepto.Z` swaps out the prototype of the given `dom` array
 159   // of nodes with `$.fn` and thus supplying all the Zepto functions
 160   // to the array. This method can be overriden in plugins.
 161   zepto.Z = function(dom, selector) {
 162     return new Z(dom, selector)
 163   }
 164
 165   // `$.zepto.isZ` should return `true` if the given object is a Zepto
 166   // collection. This method can be overriden in plugins.
 167   zepto.isZ = function(object) {
 168     return object instanceof zepto.Z
 169   }
 170
 171   // `$.zepto.init` is Zepto's counterpart to jQuery's `$.fn.init` and
 172   // takes a CSS selector and an optional context (and handles various
 173   // special cases).
 174   // This method can be overriden in plugins.
 175   zepto.init = function(selector, context) {
 176     var dom
 177     // If nothing given, return an empty Zepto collection
 178     if (!selector) return zepto.Z()
 179     // Optimize for string selectors
 180     else if (typeof selector == 'string') {
 181       selector = selector.trim()
 182       // If it's a html fragment, create nodes from it
 183       // Note: In both Chrome 21 and Firefox 15, DOM error 12
 184       // is thrown if the fragment doesn't begin with <
 185       if (selector[0] == '<' && fragmentRE.test(selector))
 186         dom = zepto.fragment(selector, RegExp.$1, context), selector = null
 187       // If there's a context, create a collection on that context first, and select
 188       // nodes from there
 189       else if (context !== undefined) return $(context).find(selector)
 190       // If it's a CSS selector, use it to select nodes.
 191       else dom = zepto.qsa(document, selector)
 192     }
 193     // If a function is given, call it when the DOM is ready
 194     else if (isFunction(selector)) return $(document).ready(selector)
 195     // If a Zepto collection is given, just return it
 196     else if (zepto.isZ(selector)) return selector
 197     else {
 198       // normalize array if an array of nodes is given
 199       if (isArray(selector)) dom = compact(selector)
 200       // Wrap DOM nodes.
 201       else if (isObject(selector))
 202         dom = [selector], selector = null
 203       // If it's a html fragment, create nodes from it
 204       else if (fragmentRE.test(selector))
 205         dom = zepto.fragment(selector.trim(), RegExp.$1, context), selector = null
 206       // If there's a context, create a collection on that context first, and select
 207       // nodes from there
 208       else if (context !== undefined) return $(context).find(selector)
 209       // And last but no least, if it's a CSS selector, use it to select nodes.
 210       else dom = zepto.qsa(document, selector)
 211     }
 212     // create a new Zepto collection from the nodes found
 213     return zepto.Z(dom, selector)
 214   }
 215
 216   // `$` will be the base `Zepto` object. When calling this
 217   // function just call `$.zepto.init, which makes the implementation
 218   // details of selecting nodes and creating Zepto collections
 219   // patchable in plugins.
 220   $ = function(selector, context){
 221     return zepto.init(selector, context)
 222   }
 223
 224   function extend(target, source, deep) {
 225     for (key in source)
 226       if (deep && (isPlainObject(source[key]) || isArray(source[key]))) {
 227         if (isPlainObject(source[key]) && !isPlainObject(target[key]))
 228           target[key] = {}
 229         if (isArray(source[key]) && !isArray(target[key]))
 230           target[key] = []
 231         extend(target[key], source[key], deep)
 232       }
 233       else if (source[key] !== undefined) target[key] = source[key]
 234   }
 235
 236   // Copy all but undefined properties from one or more
 237   // objects to the `target` object.
 238   $.extend = function(target){
 239     var deep, args = slice.call(arguments, 1)
 240     if (typeof target == 'boolean') {
 241       deep = target
 242       target = args.shift()
 243     }
 244     args.forEach(function(arg){ extend(target, arg, deep) })
 245     return target
 246   }
 247
 248   // `$.zepto.qsa` is Zepto's CSS selector implementation which
 249   // uses `document.querySelectorAll` and optimizes for some special cases, like `#id`.
 250   // This method can be overriden in plugins.
 251   zepto.qsa = function(element, selector){
 252     var found,
 253         maybeID = selector[0] == '#',
 254         maybeClass = !maybeID && selector[0] == '.',
 255         nameOnly = maybeID || maybeClass ? selector.slice(1) : selector, // Ensure that a 1 char tag name still gets checked
 256         isSimple = simpleSelectorRE.test(nameOnly)
 257     return (element.getElementById && isSimple && maybeID) ? // Safari DocumentFragment doesn't have getElementById
 258       ( (found = element.getElementById(nameOnly)) ? [found] : [] ) :
 259       (element.nodeType !== 1 && element.nodeType !== 9 && element.nodeType !== 11) ? [] :
 260       slice.call(
 261         isSimple && !maybeID && element.getElementsByClassName ? // DocumentFragment doesn't have getElementsByClassName/TagName
 262           maybeClass ? element.getElementsByClassName(nameOnly) : // If it's simple, it could be a class
 263           element.getElementsByTagName(selector) : // Or a tag
 264           element.querySelectorAll(selector) // Or it's not simple, and we need to query all
 265       )
 266   }
 267
 268   function filtered(nodes, selector) {
 269     return selector == null ? $(nodes) : $(nodes).filter(selector)
 270   }
 271
 272   $.contains = document.documentElement.contains ?
 273     function(parent, node) {
 274       return parent !== node && parent.contains(node)
 275     } :
 276     function(parent, node) {
 277       while (node && (node = node.parentNode))
 278         if (node === parent) return true
 279       return false
 280     }
 281
 282   function funcArg(context, arg, idx, payload) {
 283     return isFunction(arg) ? arg.call(context, idx, payload) : arg
 284   }
 285
 286   function setAttribute(node, name, value) {
 287     value == null ? node.removeAttribute(name) : node.setAttribute(name, value)
 288   }
 289
 290   // access className property while respecting SVGAnimatedString
 291   function className(node, value){
 292     var klass = node.className || '',
 293         svg   = klass && klass.baseVal !== undefined
 294
 295     if (value === undefined) return svg ? klass.baseVal : klass
 296     svg ? (klass.baseVal = value) : (node.className = value)
 297   }
 298
 299   // "true"  => true
 300   // "false" => false
 301   // "null"  => null
 302   // "42"    => 42
 303   // "42.5"  => 42.5
 304   // "08"    => "08"
 305   // JSON    => parse if valid
 306   // String  => self
 307   function deserializeValue(value) {
 308     try {
 309       return value ?
 310         value == "true" ||
 311         ( value == "false" ? false :
 312           value == "null" ? null :
 313           +value + "" == value ? +value :
 314           /^[\[\{]/.test(value) ? $.parseJSON(value) :
 315           value )
 316         : value
 317     } catch(e) {
 318       return value
 319     }
 320   }
 321
 322   $.type = type
 323   $.isFunction = isFunction
 324   $.isWindow = isWindow
 325   $.isArray = isArray
 326   $.isPlainObject = isPlainObject
 327
 328   $.isEmptyObject = function(obj) {
 329     var name
 330     for (name in obj) return false
 331     return true
 332   }
 333
 334   $.inArray = function(elem, array, i){
 335     return emptyArray.indexOf.call(array, elem, i)
 336   }
 337
 338   $.camelCase = camelize
 339   $.trim = function(str) {
 340     return str == null ? "" : String.prototype.trim.call(str)
 341   }
 342
 343   // plugin compatibility
 344   $.uuid = 0
 345   $.support = { }
 346   $.expr = { }
 347   $.noop = function() {}
 348
 349   $.map = function(elements, callback){
 350     var value, values = [], i, key
 351     if (likeArray(elements))
 352       for (i = 0; i < elements.length; i++) {
 353         value = callback(elements[i], i)
 354         if (value != null) values.push(value)
 355       }
 356     else
 357       for (key in elements) {
 358         value = callback(elements[key], key)
 359         if (value != null) values.push(value)
 360       }
 361     return flatten(values)
 362   }
 363
 364   $.each = function(elements, callback){
 365     var i, key
 366     if (likeArray(elements)) {
 367       for (i = 0; i < elements.length; i++)
 368         if (callback.call(elements[i], i, elements[i]) === false) return elements
 369     } else {
 370       for (key in elements)
 371         if (callback.call(elements[key], key, elements[key]) === false) return elements
 372     }
 373
 374     return elements
 375   }
 376
 377   $.grep = function(elements, callback){
 378     return filter.call(elements, callback)
 379   }
 380
 381   if (window.JSON) $.parseJSON = JSON.parse
 382
 383   // Populate the class2type map
 384   $.each("Boolean Number String Function Array Date RegExp Object Error".split(" "), function(i, name) {
 385     class2type[ "[object " + name + "]" ] = name.toLowerCase()
 386   })
 387
 388   // Define methods that will be available on all
 389   // Zepto collections
 390   $.fn = {
 391     constructor: zepto.Z,
 392     length: 0,
 393
 394     // Because a collection acts like an array
 395     // copy over these useful array functions.
 396     forEach: emptyArray.forEach,
 397     reduce: emptyArray.reduce,
 398     push: emptyArray.push,
 399     sort: emptyArray.sort,
 400     splice: emptyArray.splice,
 401     indexOf: emptyArray.indexOf,
 402     concat: function(){
 403       var i, value, args = []
 404       for (i = 0; i < arguments.length; i++) {
 405         value = arguments[i]
 406         args[i] = zepto.isZ(value) ? value.toArray() : value
 407       }
 408       return concat.apply(zepto.isZ(this) ? this.toArray() : this, args)
 409     },
 410
 411     // `map` and `slice` in the jQuery API work differently
 412     // from their array counterparts
 413     map: function(fn){
 414       return $($.map(this, function(el, i){ return fn.call(el, i, el) }))
 415     },
 416     slice: function(){
 417       return $(slice.apply(this, arguments))
 418     },
 419
 420     ready: function(callback){
 421       // need to check if document.body exists for IE as that browser reports
 422       // document ready when it hasn't yet created the body element
 423       if (readyRE.test(document.readyState) && document.body) callback($)
 424       else document.addEventListener('DOMContentLoaded', function(){ callback($) }, false)
 425       return this
 426     },
 427     get: function(idx){
 428       return idx === undefined ? slice.call(this) : this[idx >= 0 ? idx : idx + this.length]
 429     },
 430     toArray: function(){ return this.get() },
 431     size: function(){
 432       return this.length
 433     },
 434     remove: function(){
 435       return this.each(function(){
 436         if (this.parentNode != null)
 437           this.parentNode.removeChild(this)
 438       })
 439     },
 440     each: function(callback){
 441       emptyArray.every.call(this, function(el, idx){
 442         return callback.call(el, idx, el) !== false
 443       })
 444       return this
 445     },
 446     filter: function(selector){
 447       if (isFunction(selector)) return this.not(this.not(selector))
 448       return $(filter.call(this, function(element){
 449         return zepto.matches(element, selector)
 450       }))
 451     },
 452     add: function(selector,context){
 453       return $(uniq(this.concat($(selector,context))))
 454     },
 455     is: function(selector){
 456       return this.length > 0 && zepto.matches(this[0], selector)
 457     },
 458     not: function(selector){
 459       var nodes=[]
 460       if (isFunction(selector) && selector.call !== undefined)
 461         this.each(function(idx){
 462           if (!selector.call(this,idx)) nodes.push(this)
 463         })
 464       else {
 465         var excludes = typeof selector == 'string' ? this.filter(selector) :
 466           (likeArray(selector) && isFunction(selector.item)) ? slice.call(selector) : $(selector)
 467         this.forEach(function(el){
 468           if (excludes.indexOf(el) < 0) nodes.push(el)
 469         })
 470       }
 471       return $(nodes)
 472     },
 473     has: function(selector){
 474       return this.filter(function(){
 475         return isObject(selector) ?
 476           $.contains(this, selector) :
 477           $(this).find(selector).size()
 478       })
 479     },
 480     eq: function(idx){
 481       return idx === -1 ? this.slice(idx) : this.slice(idx, + idx + 1)
 482     },
 483     first: function(){
 484       var el = this[0]
 485       return el && !isObject(el) ? el : $(el)
 486     },
 487     last: function(){
 488       var el = this[this.length - 1]
 489       return el && !isObject(el) ? el : $(el)
 490     },
 491     find: function(selector){
 492       var result, $this = this
 493       if (!selector) result = $()
 494       else if (typeof selector == 'object')
 495         result = $(selector).filter(function(){
 496           var node = this
 497           return emptyArray.some.call($this, function(parent){
 498             return $.contains(parent, node)
 499           })
 500         })
 501       else if (this.length == 1) result = $(zepto.qsa(this[0], selector))
 502       else result = this.map(function(){ return zepto.qsa(this, selector) })
 503       return result
 504     },
 505     closest: function(selector, context){
 506       var node = this[0], collection = false
 507       if (typeof selector == 'object') collection = $(selector)
 508       while (node && !(collection ? collection.indexOf(node) >= 0 : zepto.matches(node, selector)))
 509         node = node !== context && !isDocument(node) && node.parentNode
 510       return $(node)
 511     },
 512     parents: function(selector){
 513       var ancestors = [], nodes = this
 514       while (nodes.length > 0)
 515         nodes = $.map(nodes, function(node){
 516           if ((node = node.parentNode) && !isDocument(node) && ancestors.indexOf(node) < 0) {
 517             ancestors.push(node)
 518             return node
 519           }
 520         })
 521       return filtered(ancestors, selector)
 522     },
 523     parent: function(selector){
 524       return filtered(uniq(this.pluck('parentNode')), selector)
 525     },
 526     children: function(selector){
 527       return filtered(this.map(function(){ return children(this) }), selector)
 528     },
 529     contents: function() {
 530       return this.map(function() { return this.contentDocument || slice.call(this.childNodes) })
 531     },
 532     siblings: function(selector){
 533       return filtered(this.map(function(i, el){
 534         return filter.call(children(el.parentNode), function(child){ return child!==el })
 535       }), selector)
 536     },
 537     empty: function(){
 538       return this.each(function(){ this.innerHTML = '' })
 539     },
 540     // `pluck` is borrowed from Prototype.js
 541     pluck: function(property){
 542       return $.map(this, function(el){ return el[property] })
 543     },
 544     show: function(){
 545       return this.each(function(){
 546         this.style.display == "none" && (this.style.display = '')
 547         if (getComputedStyle(this, '').getPropertyValue("display") == "none")
 548           this.style.display = defaultDisplay(this.nodeName)
 549       })
 550     },
 551     replaceWith: function(newContent){
 552       return this.before(newContent).remove()
 553     },
 554     wrap: function(structure){
 555       var func = isFunction(structure)
 556       if (this[0] && !func)
 557         var dom   = $(structure).get(0),
 558             clone = dom.parentNode || this.length > 1
 559
 560       return this.each(function(index){
 561         $(this).wrapAll(
 562           func ? structure.call(this, index) :
 563             clone ? dom.cloneNode(true) : dom
 564         )
 565       })
 566     },
 567     wrapAll: function(structure){
 568       if (this[0]) {
 569         $(this[0]).before(structure = $(structure))
 570         var children
 571         // drill down to the inmost element
 572         while ((children = structure.children()).length) structure = children.first()
 573         $(structure).append(this)
 574       }
 575       return this
 576     },
 577     wrapInner: function(structure){
 578       var func = isFunction(structure)
 579       return this.each(function(index){
 580         var self = $(this), contents = self.contents(),
 581             dom  = func ? structure.call(this, index) : structure
 582         contents.length ? contents.wrapAll(dom) : self.append(dom)
 583       })
 584     },
 585     unwrap: function(){
 586       this.parent().each(function(){
 587         $(this).replaceWith($(this).children())
 588       })
 589       return this
 590     },
 591     clone: function(){
 592       return this.map(function(){ return this.cloneNode(true) })
 593     },
 594     hide: function(){
 595       return this.css("display", "none")
 596     },
 597     toggle: function(setting){
 598       return this.each(function(){
 599         var el = $(this)
 600         ;(setting === undefined ? el.css("display") == "none" : setting) ? el.show() : el.hide()
 601       })
 602     },
 603     prev: function(selector){ return $(this.pluck('previousElementSibling')).filter(selector || '*') },
 604     next: function(selector){ return $(this.pluck('nextElementSibling')).filter(selector || '*') },
 605     html: function(html){
 606       return 0 in arguments ?
 607         this.each(function(idx){
 608           var originHtml = this.innerHTML
 609           $(this).empty().append( funcArg(this, html, idx, originHtml) )
 610         }) :
 611         (0 in this ? this[0].innerHTML : null)
 612     },
 613     text: function(text){
 614       return 0 in arguments ?
 615         this.each(function(idx){
 616           var newText = funcArg(this, text, idx, this.textContent)
 617           this.textContent = newText == null ? '' : ''+newText
 618         }) :
 619         (0 in this ? this[0].textContent : null)
 620     },
 621     attr: function(name, value){
 622       var result
 623       return (typeof name == 'string' && !(1 in arguments)) ?
 624         (!this.length || this[0].nodeType !== 1 ? undefined :
 625           (!(result = this[0].getAttribute(name)) && name in this[0]) ? this[0][name] : result
 626         ) :
 627         this.each(function(idx){
 628           if (this.nodeType !== 1) return
 629           if (isObject(name)) for (key in name) setAttribute(this, key, name[key])
 630           else setAttribute(this, name, funcArg(this, value, idx, this.getAttribute(name)))
 631         })
 632     },
 633     removeAttr: function(name){
 634       return this.each(function(){ this.nodeType === 1 && name.split(' ').forEach(function(attribute){
 635         setAttribute(this, attribute)
 636       }, this)})
 637     },
 638     prop: function(name, value){
 639       name = propMap[name] || name
 640       return (1 in arguments) ?
 641         this.each(function(idx){
 642           this[name] = funcArg(this, value, idx, this[name])
 643         }) :
 644         (this[0] && this[0][name])
 645     },
 646     data: function(name, value){
 647       var attrName = 'data-' + name.replace(capitalRE, '-$1').toLowerCase()
 648
 649       var data = (1 in arguments) ?
 650         this.attr(attrName, value) :
 651         this.attr(attrName)
 652
 653       return data !== null ? deserializeValue(data) : undefined
 654     },
 655     val: function(value){
 656       return 0 in arguments ?
 657         this.each(function(idx){
 658           this.value = funcArg(this, value, idx, this.value)
 659         }) :
 660         (this[0] && (this[0].multiple ?
 661            $(this[0]).find('option').filter(function(){ return this.selected }).pluck('value') :
 662            this[0].value)
 663         )
 664     },
 665     offset: function(coordinates){
 666       if (coordinates) return this.each(function(index){
 667         var $this = $(this),
 668             coords = funcArg(this, coordinates, index, $this.offset()),
 669             parentOffset = $this.offsetParent().offset(),
 670             props = {
 671               top:  coords.top  - parentOffset.top,
 672               left: coords.left - parentOffset.left
 673             }
 674
 675         if ($this.css('position') == 'static') props['position'] = 'relative'
 676         $this.css(props)
 677       })
 678       if (!this.length) return null
 679       if (!$.contains(document.documentElement, this[0]))
 680         return {top: 0, left: 0}
 681       var obj = this[0].getBoundingClientRect()
 682       return {
 683         left: obj.left + window.pageXOffset,
 684         top: obj.top + window.pageYOffset,
 685         width: Math.round(obj.width),
 686         height: Math.round(obj.height)
 687       }
 688     },
 689     css: function(property, value){
 690       if (arguments.length < 2) {
 691         var computedStyle, element = this[0]
 692         if(!element) return
 693         computedStyle = getComputedStyle(element, '')
 694         if (typeof property == 'string')
 695           return element.style[camelize(property)] || computedStyle.getPropertyValue(property)
 696         else if (isArray(property)) {
 697           var props = {}
 698           $.each(property, function(_, prop){
 699             props[prop] = (element.style[camelize(prop)] || computedStyle.getPropertyValue(prop))
 700           })
 701           return props
 702         }
 703       }
 704
 705       var css = ''
 706       if (type(property) == 'string') {
 707         if (!value && value !== 0)
 708           this.each(function(){ this.style.removeProperty(dasherize(property)) })
 709         else
 710           css = dasherize(property) + ":" + maybeAddPx(property, value)
 711       } else {
 712         for (key in property)
 713           if (!property[key] && property[key] !== 0)
 714             this.each(function(){ this.style.removeProperty(dasherize(key)) })
 715           else
 716             css += dasherize(key) + ':' + maybeAddPx(key, property[key]) + ';'
 717       }
 718
 719       return this.each(function(){ this.style.cssText += ';' + css })
 720     },
 721     index: function(element){
 722       return element ? this.indexOf($(element)[0]) : this.parent().children().indexOf(this[0])
 723     },
 724     hasClass: function(name){
 725       if (!name) return false
 726       return emptyArray.some.call(this, function(el){
 727         return this.test(className(el))
 728       }, classRE(name))
 729     },
 730     addClass: function(name){
 731       if (!name) return this
 732       return this.each(function(idx){
 733         if (!('className' in this)) return
 734         classList = []
 735         var cls = className(this), newName = funcArg(this, name, idx, cls)
 736         newName.split(/\s+/g).forEach(function(klass){
 737           if (!$(this).hasClass(klass)) classList.push(klass)
 738         }, this)
 739         classList.length && className(this, cls + (cls ? " " : "") + classList.join(" "))
 740       })
 741     },
 742     removeClass: function(name){
 743       return this.each(function(idx){
 744         if (!('className' in this)) return
 745         if (name === undefined) return className(this, '')
 746         classList = className(this)
 747         funcArg(this, name, idx, classList).split(/\s+/g).forEach(function(klass){
 748           classList = classList.replace(classRE(klass), " ")
 749         })
 750         className(this, classList.trim())
 751       })
 752     },
 753     toggleClass: function(name, when){
 754       if (!name) return this
 755       return this.each(function(idx){
 756         var $this = $(this), names = funcArg(this, name, idx, className(this))
 757         names.split(/\s+/g).forEach(function(klass){
 758           (when === undefined ? !$this.hasClass(klass) : when) ?
 759             $this.addClass(klass) : $this.removeClass(klass)
 760         })
 761       })
 762     },
 763     scrollTop: function(value){
 764       if (!this.length) return
 765       var hasScrollTop = 'scrollTop' in this[0]
 766       if (value === undefined) return hasScrollTop ? this[0].scrollTop : this[0].pageYOffset
 767       return this.each(hasScrollTop ?
 768         function(){ this.scrollTop = value } :
 769         function(){ this.scrollTo(this.scrollX, value) })
 770     },
 771     scrollLeft: function(value){
 772       if (!this.length) return
 773       var hasScrollLeft = 'scrollLeft' in this[0]
 774       if (value === undefined) return hasScrollLeft ? this[0].scrollLeft : this[0].pageXOffset
 775       return this.each(hasScrollLeft ?
 776         function(){ this.scrollLeft = value } :
 777         function(){ this.scrollTo(value, this.scrollY) })
 778     },
 779     position: function() {
 780       if (!this.length) return
 781
 782       var elem = this[0],
 783         // Get *real* offsetParent
 784         offsetParent = this.offsetParent(),
 785         // Get correct offsets
 786         offset       = this.offset(),
 787         parentOffset = rootNodeRE.test(offsetParent[0].nodeName) ? { top: 0, left: 0 } : offsetParent.offset()
 788
 789       // Subtract element margins
 790       // note: when an element has margin: auto the offsetLeft and marginLeft
 791       // are the same in Safari causing offset.left to incorrectly be 0
 792       offset.top  -= parseFloat( $(elem).css('margin-top') ) || 0
 793       offset.left -= parseFloat( $(elem).css('margin-left') ) || 0
 794
 795       // Add offsetParent borders
 796       parentOffset.top  += parseFloat( $(offsetParent[0]).css('border-top-width') ) || 0
 797       parentOffset.left += parseFloat( $(offsetParent[0]).css('border-left-width') ) || 0
 798
 799       // Subtract the two offsets
 800       return {
 801         top:  offset.top  - parentOffset.top,
 802         left: offset.left - parentOffset.left
 803       }
 804     },
 805     offsetParent: function() {
 806       return this.map(function(){
 807         var parent = this.offsetParent || document.body
 808         while (parent && !rootNodeRE.test(parent.nodeName) && $(parent).css("position") == "static")
 809           parent = parent.offsetParent
 810         return parent
 811       })
 812     }
 813   }
 814
 815   // for now
 816   $.fn.detach = $.fn.remove
 817
 818   // Generate the `width` and `height` functions
 819   ;['width', 'height'].forEach(function(dimension){
 820     var dimensionProperty =
 821       dimension.replace(/./, function(m){ return m[0].toUpperCase() })
 822
 823     $.fn[dimension] = function(value){
 824       var offset, el = this[0]
 825       if (value === undefined) return isWindow(el) ? el['inner' + dimensionProperty] :
 826         isDocument(el) ? el.documentElement['scroll' + dimensionProperty] :
 827         (offset = this.offset()) && offset[dimension]
 828       else return this.each(function(idx){
 829         el = $(this)
 830         el.css(dimension, funcArg(this, value, idx, el[dimension]()))
 831       })
 832     }
 833   })
 834
 835   function traverseNode(node, fun) {
 836     fun(node)
 837     for (var i = 0, len = node.childNodes.length; i < len; i++)
 838       traverseNode(node.childNodes[i], fun)
 839   }
 840
 841   // Generate the `after`, `prepend`, `before`, `append`,
 842   // `insertAfter`, `insertBefore`, `appendTo`, and `prependTo` methods.
 843   adjacencyOperators.forEach(function(operator, operatorIndex) {
 844     var inside = operatorIndex % 2 //=> prepend, append
 845
 846     $.fn[operator] = function(){
 847       // arguments can be nodes, arrays of nodes, Zepto objects and HTML strings
 848       var argType, nodes = $.map(arguments, function(arg) {
 849             argType = type(arg)
 850             return argType == "object" || argType == "array" || arg == null ?
 851               arg : zepto.fragment(arg)
 852           }),
 853           parent, copyByClone = this.length > 1
 854       if (nodes.length < 1) return this
 855
 856       return this.each(function(_, target){
 857         parent = inside ? target : target.parentNode
 858
 859         // convert all methods to a "before" operation
 860         target = operatorIndex == 0 ? target.nextSibling :
 861                  operatorIndex == 1 ? target.firstChild :
 862                  operatorIndex == 2 ? target :
 863                  null
 864
 865         var parentInDocument = $.contains(document.documentElement, parent)
 866
 867         nodes.forEach(function(node){
 868           if (copyByClone) node = node.cloneNode(true)
 869           else if (!parent) return $(node).remove()
 870
 871           parent.insertBefore(node, target)
 872           if (parentInDocument) traverseNode(node, function(el){
 873             if (el.nodeName != null && el.nodeName.toUpperCase() === 'SCRIPT' &&
 874                (!el.type || el.type === 'text/javascript') && !el.src)
 875               window['eval'].call(window, el.innerHTML)
 876           })
 877         })
 878       })
 879     }
 880
 881     // after    => insertAfter
 882     // prepend  => prependTo
 883     // before   => insertBefore
 884     // append   => appendTo
 885     $.fn[inside ? operator+'To' : 'insert'+(operatorIndex ? 'Before' : 'After')] = function(html){
 886       $(html)[operator](this)
 887       return this
 888     }
 889   })
 890
 891   zepto.Z.prototype = Z.prototype = $.fn
 892
 893   // Export internal API functions in the `$.zepto` namespace
 894   zepto.uniq = uniq
 895   zepto.deserializeValue = deserializeValue
 896   $.zepto = zepto
 897
 898   return $
 899 })()
 900
 901 window.Zepto = Zepto
 902 window.$ === undefined && (window.$ = Zepto)
 903
 904 ;(function($){
 905   var _zid = 1, undefined,
 906       slice = Array.prototype.slice,
 907       isFunction = $.isFunction,
 908       isString = function(obj){ return typeof obj == 'string' },
 909       handlers = {},
 910       specialEvents={},
 911       focusinSupported = 'onfocusin' in window,
 912       focus = { focus: 'focusin', blur: 'focusout' },
 913       hover = { mouseenter: 'mouseover', mouseleave: 'mouseout' }
 914
 915   specialEvents.click = specialEvents.mousedown = specialEvents.mouseup = specialEvents.mousemove = 'MouseEvents'
 916
 917   function zid(element) {
 918     return element._zid || (element._zid = _zid++)
 919   }
 920   function findHandlers(element, event, fn, selector) {
 921     event = parse(event)
 922     if (event.ns) var matcher = matcherFor(event.ns)
 923     return (handlers[zid(element)] || []).filter(function(handler) {
 924       return handler
 925         && (!event.e  || handler.e == event.e)
 926         && (!event.ns || matcher.test(handler.ns))
 927         && (!fn       || zid(handler.fn) === zid(fn))
 928         && (!selector || handler.sel == selector)
 929     })
 930   }
 931   function parse(event) {
 932     var parts = ('' + event).split('.')
 933     return {e: parts[0], ns: parts.slice(1).sort().join(' ')}
 934   }
 935   function matcherFor(ns) {
 936     return new RegExp('(?:^| )' + ns.replace(' ', ' .* ?') + '(?: |$)')
 937   }
 938
 939   function eventCapture(handler, captureSetting) {
 940     return handler.del &&
 941       (!focusinSupported && (handler.e in focus)) ||
 942       !!captureSetting
 943   }
 944
 945   function realEvent(type) {
 946     return hover[type] || (focusinSupported && focus[type]) || type
 947   }
 948
 949   function add(element, events, fn, data, selector, delegator, capture){
 950     var id = zid(element), set = (handlers[id] || (handlers[id] = []))
 951     events.split(/\s/).forEach(function(event){
 952       if (event == 'ready') return $(document).ready(fn)
 953       var handler   = parse(event)
 954       handler.fn    = fn
 955       handler.sel   = selector
 956       // emulate mouseenter, mouseleave
 957       if (handler.e in hover) fn = function(e){
 958         var related = e.relatedTarget
 959         if (!related || (related !== this && !$.contains(this, related)))
 960           return handler.fn.apply(this, arguments)
 961       }
 962       handler.del   = delegator
 963       var callback  = delegator || fn
 964       handler.proxy = function(e){
 965         e = compatible(e)
 966         if (e.isImmediatePropagationStopped()) return
 967         e.data = data
 968         var result = callback.apply(element, e._args == undefined ? [e] : [e].concat(e._args))
 969         if (result === false) e.preventDefault(), e.stopPropagation()
 970         return result
 971       }
 972       handler.i = set.length
 973       set.push(handler)
 974       if ('addEventListener' in element)
 975         element.addEventListener(realEvent(handler.e), handler.proxy, eventCapture(handler, capture))
 976     })
 977   }
 978   function remove(element, events, fn, selector, capture){
 979     var id = zid(element)
 980     ;(events || '').split(/\s/).forEach(function(event){
 981       findHandlers(element, event, fn, selector).forEach(function(handler){
 982         delete handlers[id][handler.i]
 983       if ('removeEventListener' in element)
 984         element.removeEventListener(realEvent(handler.e), handler.proxy, eventCapture(handler, capture))
 985       })
 986     })
 987   }
 988
 989   $.event = { add: add, remove: remove }
 990
 991   $.proxy = function(fn, context) {
 992     var args = (2 in arguments) && slice.call(arguments, 2)
 993     if (isFunction(fn)) {
 994       var proxyFn = function(){ return fn.apply(context, args ? args.concat(slice.call(arguments)) : arguments) }
 995       proxyFn._zid = zid(fn)
 996       return proxyFn
 997     } else if (isString(context)) {
 998       if (args) {
 999         args.unshift(fn[context], fn)
1000         return $.proxy.apply(null, args)
1001       } else {
1002         return $.proxy(fn[context], fn)
1003       }
1004     } else {
1005       throw new TypeError("expected function")
1006     }
1007   }
1008
1009   $.fn.bind = function(event, data, callback){
1010     return this.on(event, data, callback)
1011   }
1012   $.fn.unbind = function(event, callback){
1013     return this.off(event, callback)
1014   }
1015   $.fn.one = function(event, selector, data, callback){
1016     return this.on(event, selector, data, callback, 1)
1017   }
1018
1019   var returnTrue = function(){return true},
1020       returnFalse = function(){return false},
1021       ignoreProperties = /^([A-Z]|returnValue$|layer[XY]$)/,
1022       eventMethods = {
1023         preventDefault: 'isDefaultPrevented',
1024         stopImmediatePropagation: 'isImmediatePropagationStopped',
1025         stopPropagation: 'isPropagationStopped'
1026       }
1027
1028   function compatible(event, source) {
1029     if (source || !event.isDefaultPrevented) {
1030       source || (source = event)
1031
1032       $.each(eventMethods, function(name, predicate) {
1033         var sourceMethod = source[name]
1034         event[name] = function(){
1035           this[predicate] = returnTrue
1036           return sourceMethod && sourceMethod.apply(source, arguments)
1037         }
1038         event[predicate] = returnFalse
1039       })
1040
1041       if (source.defaultPrevented !== undefined ? source.defaultPrevented :
1042           'returnValue' in source ? source.returnValue === false :
1043           source.getPreventDefault && source.getPreventDefault())
1044         event.isDefaultPrevented = returnTrue
1045     }
1046     return event
1047   }
1048
1049   function createProxy(event) {
1050     var key, proxy = { originalEvent: event }
1051     for (key in event)
1052       if (!ignoreProperties.test(key) && event[key] !== undefined) proxy[key] = event[key]
1053
1054     return compatible(proxy, event)
1055   }
1056
1057   $.fn.delegate = function(selector, event, callback){
1058     return this.on(event, selector, callback)
1059   }
1060   $.fn.undelegate = function(selector, event, callback){
1061     return this.off(event, selector, callback)
1062   }
1063
1064   $.fn.live = function(event, callback){
1065     $(document.body).delegate(this.selector, event, callback)
1066     return this
1067   }
1068   $.fn.die = function(event, callback){
1069     $(document.body).undelegate(this.selector, event, callback)
1070     return this
1071   }
1072
1073   $.fn.on = function(event, selector, data, callback, one){
1074     var autoRemove, delegator, $this = this
1075     if (event && !isString(event)) {
1076       $.each(event, function(type, fn){
1077         $this.on(type, selector, data, fn, one)
1078       })
1079       return $this
1080     }
1081
1082     if (!isString(selector) && !isFunction(callback) && callback !== false)
1083       callback = data, data = selector, selector = undefined
1084     if (callback === undefined || data === false)
1085       callback = data, data = undefined
1086
1087     if (callback === false) callback = returnFalse
1088
1089     return $this.each(function(_, element){
1090       if (one) autoRemove = function(e){
1091         remove(element, e.type, callback)
1092         return callback.apply(this, arguments)
1093       }
1094
1095       if (selector) delegator = function(e){
1096         var evt, match = $(e.target).closest(selector, element).get(0)
1097         if (match && match !== element) {
1098           evt = $.extend(createProxy(e), {currentTarget: match, liveFired: element})
1099           return (autoRemove || callback).apply(match, [evt].concat(slice.call(arguments, 1)))
1100         }
1101       }
1102
1103       add(element, event, callback, data, selector, delegator || autoRemove)
1104     })
1105   }
1106   $.fn.off = function(event, selector, callback){
1107     var $this = this
1108     if (event && !isString(event)) {
1109       $.each(event, function(type, fn){
1110         $this.off(type, selector, fn)
1111       })
1112       return $this
1113     }
1114
1115     if (!isString(selector) && !isFunction(callback) && callback !== false)
1116       callback = selector, selector = undefined
1117
1118     if (callback === false) callback = returnFalse
1119
1120     return $this.each(function(){
1121       remove(this, event, callback, selector)
1122     })
1123   }
1124
1125   $.fn.trigger = function(event, args){
1126     event = (isString(event) || $.isPlainObject(event)) ? $.Event(event) : compatible(event)
1127     event._args = args
1128     return this.each(function(){
1129       // handle focus(), blur() by calling them directly
1130       if (event.type in focus && typeof this[event.type] == "function") this[event.type]()
1131       // items in the collection might not be DOM elements
1132       else if ('dispatchEvent' in this) this.dispatchEvent(event)
1133       else $(this).triggerHandler(event, args)
1134     })
1135   }
1136
1137   // triggers event handlers on current element just as if an event occurred,
1138   // doesn't trigger an actual event, doesn't bubble
1139   $.fn.triggerHandler = function(event, args){
1140     var e, result
1141     this.each(function(i, element){
1142       e = createProxy(isString(event) ? $.Event(event) : event)
1143       e._args = args
1144       e.target = element
1145       $.each(findHandlers(element, event.type || event), function(i, handler){
1146         result = handler.proxy(e)
1147         if (e.isImmediatePropagationStopped()) return false
1148       })
1149     })
1150     return result
1151   }
1152
1153   // shortcut methods for `.bind(event, fn)` for each event type
1154   ;('focusin focusout focus blur load resize scroll unload click dblclick '+
1155   'mousedown mouseup mousemove mouseover mouseout mouseenter mouseleave '+
1156   'change select keydown keypress keyup error').split(' ').forEach(function(event) {
1157     $.fn[event] = function(callback) {
1158       return (0 in arguments) ?
1159         this.bind(event, callback) :
1160         this.trigger(event)
1161     }
1162   })
1163
1164   $.Event = function(type, props) {
1165     if (!isString(type)) props = type, type = props.type
1166     var event = document.createEvent(specialEvents[type] || 'Events'), bubbles = true
1167     if (props) for (var name in props) (name == 'bubbles') ? (bubbles = !!props[name]) : (event[name] = props[name])
1168     event.initEvent(type, bubbles, true)
1169     return compatible(event)
1170   }
1171
1172 })(Zepto)
1173
1174 ;(function($){
1175   var data = {}, dataAttr = $.fn.data, camelize = $.camelCase,
1176     exp = $.expando = 'Zepto' + (+new Date()), emptyArray = []
1177
1178   // Get value from node:
1179   // 1. first try key as given,
1180   // 2. then try camelized key,
1181   // 3. fall back to reading "data-*" attribute.
1182   function getData(node, name) {
1183     var id = node[exp], store = id && data[id]
1184     if (name === undefined) return store || setData(node)
1185     else {
1186       if (store) {
1187         if (name in store) return store[name]
1188         var camelName = camelize(name)
1189         if (camelName in store) return store[camelName]
1190       }
1191       return dataAttr.call($(node), name)
1192     }
1193   }
1194
1195   // Store value under camelized key on node
1196   function setData(node, name, value) {
1197     var id = node[exp] || (node[exp] = ++$.uuid),
1198       store = data[id] || (data[id] = attributeData(node))
1199     if (name !== undefined) store[camelize(name)] = value
1200     return store
1201   }
1202
1203   // Read all "data-*" attributes from a node
1204   function attributeData(node) {
1205     var store = {}
1206     $.each(node.attributes || emptyArray, function(i, attr){
1207       if (attr.name.indexOf('data-') == 0)
1208         store[camelize(attr.name.replace('data-', ''))] =
1209           $.zepto.deserializeValue(attr.value)
1210     })
1211     return store
1212   }
1213
1214   $.fn.data = function(name, value) {
1215     return value === undefined ?
1216       // set multiple values via object
1217       $.isPlainObject(name) ?
1218         this.each(function(i, node){
1219           $.each(name, function(key, value){ setData(node, key, value) })
1220         }) :
1221         // get value from first element
1222         (0 in this ? getData(this[0], name) : undefined) :
1223       // set value on all elements
1224       this.each(function(){ setData(this, name, value) })
1225   }
1226
1227   $.fn.removeData = function(names) {
1228     if (typeof names == 'string') names = names.split(/\s+/)
1229     return this.each(function(){
1230       var id = this[exp], store = id && data[id]
1231       if (store) $.each(names || store, function(key){
1232         delete store[names ? camelize(this) : key]
1233       })
1234     })
1235   }
1236
1237   // Generate extended `remove` and `empty` functions
1238   ;['remove', 'empty'].forEach(function(methodName){
1239     var origFn = $.fn[methodName]
1240     $.fn[methodName] = function() {
1241       var elements = this.find('*')
1242       if (methodName === 'remove') elements = elements.add(this)
1243       elements.removeData()
1244       return origFn.call(this)
1245     }
1246   })
1247 })(Zepto)
1248
1249 ;(function(){
1250   // getComputedStyle shouldn't freak out when called
1251   // without a valid element as argument
1252   try {
1253     getComputedStyle(undefined)
1254   } catch(e) {
1255     var nativeGetComputedStyle = getComputedStyle;
1256     window.getComputedStyle = function(element){
1257       try {
1258         return nativeGetComputedStyle(element)
1259       } catch(e) {
1260         return null
1261       }
1262     }
1263   }
1264 })()