//     Zepto.js//     (c) 2010-2016 Thomas Fuchs//     Zepto.js may be freely distributed under the MIT license.var Zepto = (function() {  var undefined, key, $, classList, emptyArray = [], concat = emptyArray.concat, filter = emptyArray.filter, slice = emptyArray.slice,    document = window.document,    elementDisplay = {}, classCache = {},    cssNumber = { 'column-count': 1, 'columns': 1, 'font-weight': 1, 'line-height': 1,'opacity': 1, 'z-index': 1, 'zoom': 1 },    fragmentRE = /^\s*<(\w+|!)[^>]*>/,    singleTagRE = /^<(\w+)\s*\/?>(?:<\/\1>|)$/,    tagExpanderRE = /<(?!area|br|col|embed|hr|img|input|link|meta|param)(([\w:]+)[^>]*)\/>/ig,    rootNodeRE = /^(?:body|html)$/i,    capitalRE = /([A-Z])/g,    // special attributes that should be get/set via method calls    methodAttributes = ['val', 'css', 'html', 'text', 'data', 'width', 'height', 'offset'],    adjacencyOperators = [ 'after', 'prepend', 'before', 'append' ],    table = document.createElement('table'),    tableRow = document.createElement('tr'),    containers = {      'tr': document.createElement('tbody'),      'tbody': table, 'thead': table, 'tfoot': table,      'td': tableRow, 'th': tableRow,      '*': document.createElement('div')    },    readyRE = /complete|loaded|interactive/,    simpleSelectorRE = /^[\w-]*$/,    class2type = {},    toString = class2type.toString,    zepto = {},    camelize, uniq,    tempParent = document.createElement('div'),    propMap = {      'tabindex': 'tabIndex',      'readonly': 'readOnly',      'for': 'htmlFor',      'class': 'className',      'maxlength': 'maxLength',      'cellspacing': 'cellSpacing',      'cellpadding': 'cellPadding',      'rowspan': 'rowSpan',      'colspan': 'colSpan',      'usemap': 'useMap',      'frameborder': 'frameBorder',      'contenteditable': 'contentEditable'    },    isArray = Array.isArray ||      function(object){ return object instanceof Array }  zepto.matches = function(element, selector) {    if (!selector || !element || element.nodeType !== 1) return false    var matchesSelector = element.matches || element.webkitMatchesSelector ||                          element.mozMatchesSelector || element.oMatchesSelector ||                          element.matchesSelector    if (matchesSelector) return matchesSelector.call(element, selector)    // fall back to performing a selector:    var match, parent = element.parentNode, temp = !parent    if (temp) (parent = tempParent).appendChild(element)    match = ~zepto.qsa(parent, selector).indexOf(element)    temp && tempParent.removeChild(element)    return match  }  function type(obj) {    return obj == null ? String(obj) :      class2type[toString.call(obj)] || "object"  }  function isFunction(value) { return type(value) == "function" }  function isWindow(obj)     { return obj != null && obj == obj.window }  function isDocument(obj)   { return obj != null && obj.nodeType == obj.DOCUMENT_NODE }  function isObject(obj)     { return type(obj) == "object" }  function isPlainObject(obj) {    return isObject(obj) && !isWindow(obj) && Object.getPrototypeOf(obj) == Object.prototype  }  function likeArray(obj) {    var length = !!obj && 'length' in obj && obj.length,      type = $.type(obj)    return 'function' != type && !isWindow(obj) && (      'array' == type || length === 0 ||        (typeof length == 'number' && length > 0 && (length - 1) in obj)    )  }  function compact(array) { return filter.call(array, function(item){ return item != null }) }  function flatten(array) { return array.length > 0 ? $.fn.concat.apply([], array) : array }  camelize = function(str){ return str.replace(/-+(.)?/g, function(match, chr){ return chr ? chr.toUpperCase() : '' }) }  function dasherize(str) {    return str.replace(/::/g, '/')           .replace(/([A-Z]+)([A-Z][a-z])/g, '$1_$2')           .replace(/([a-z\d])([A-Z])/g, '$1_$2')           .replace(/_/g, '-')           .toLowerCase()  }  uniq = function(array){ return filter.call(array, function(item, idx){ return array.indexOf(item) == idx }) }  function classRE(name) {    return name in classCache ?      classCache[name] : (classCache[name] = new RegExp('(^|\\s)' + name + '(\\s|$)'))  }  function maybeAddPx(name, value) {    return (typeof value == "number" && !cssNumber[dasherize(name)]) ? value + "px" : value  }  function defaultDisplay(nodeName) {    var element, display    if (!elementDisplay[nodeName]) {      element = document.createElement(nodeName)      document.body.appendChild(element)      display = getComputedStyle(element, '').getPropertyValue("display")      element.parentNode.removeChild(element)      display == "none" && (display = "block")      elementDisplay[nodeName] = display    }    return elementDisplay[nodeName]  }  function children(element) {    return 'children' in element ?      slice.call(element.children) :      $.map(element.childNodes, function(node){ if (node.nodeType == 1) return node })  }  function Z(dom, selector) {    var i, len = dom ? dom.length : 0    for (i = 0; i < len; i++) this[i] = dom[i]    this.length = len    this.selector = selector || ''  }  // `$.zepto.fragment` takes a html string and an optional tag name  // to generate DOM nodes from the given html string.  // The generated DOM nodes are returned as an array.  // This function can be overridden in plugins for example to make  // it compatible with browsers that don't support the DOM fully.  zepto.fragment = function(html, name, properties) {    var dom, nodes, container    // A special case optimization for a single tag    if (singleTagRE.test(html)) dom = $(document.createElement(RegExp.$1))    if (!dom) {      if (html.replace) html = html.replace(tagExpanderRE, "<$1>
     ")      if (name === undefined) name = fragmentRE.test(html) && RegExp.$1      if (!(name in containers)) name = '*'      container = containers[name]      container.innerHTML = '' + html      dom = $.each(slice.call(container.childNodes), function(){        container.removeChild(this)      })    }    if (isPlainObject(properties)) {      nodes = $(dom)      $.each(properties, function(key, value) {        if (methodAttributes.indexOf(key) > -1) nodes[key](value)        else nodes.attr(key, value)      })    }    return dom  }  // `$.zepto.Z` swaps out the prototype of the given `dom` array  // of nodes with `$.fn` and thus supplying all the Zepto functions  // to the array. This method can be overridden in plugins.  zepto.Z = function(dom, selector) {    return new Z(dom, selector)  }  // `$.zepto.isZ` should return `true` if the given object is a Zepto  // collection. This method can be overridden in plugins.  zepto.isZ = function(object) {    return object instanceof zepto.Z  }  // `$.zepto.init` is Zepto's counterpart to jQuery's `$.fn.init` and  // takes a CSS selector and an optional context (and handles various  // special cases).  // This method can be overridden in plugins.  zepto.init = function(selector, context) {    var dom    // If nothing given, return an empty Zepto collection    if (!selector) return zepto.Z()    // Optimize for string selectors    else if (typeof selector == 'string') {      selector = selector.trim()      // If it's a html fragment, create nodes from it      // Note: In both Chrome 21 and Firefox 15, DOM error 12      // is thrown if the fragment doesn't begin with <      if (selector[0] == '<' && fragmentRE.test(selector))        dom = zepto.fragment(selector, RegExp.$1, context), selector = null      // If there's a context, create a collection on that context first, and select      // nodes from there      else if (context !== undefined) return $(context).find(selector)      // If it's a CSS selector, use it to select nodes.      else dom = zepto.qsa(document, selector)    }    // If a function is given, call it when the DOM is ready    else if (isFunction(selector)) return $(document).ready(selector)    // If a Zepto collection is given, just return it    else if (zepto.isZ(selector)) return selector    else {      // normalize array if an array of nodes is given      if (isArray(selector)) dom = compact(selector)      // Wrap DOM nodes.      else if (isObject(selector))        dom = [selector], selector = null      // If it's a html fragment, create nodes from it      else if (fragmentRE.test(selector))        dom = zepto.fragment(selector.trim(), RegExp.$1, context), selector = null      // If there's a context, create a collection on that context first, and select      // nodes from there      else if (context !== undefined) return $(context).find(selector)      // And last but no least, if it's a CSS selector, use it to select nodes.      else dom = zepto.qsa(document, selector)    }    // create a new Zepto collection from the nodes found    return zepto.Z(dom, selector)  }  // `$` will be the base `Zepto` object. When calling this  // function just call `$.zepto.init, which makes the implementation  // details of selecting nodes and creating Zepto collections  // patchable in plugins.  $ = function(selector, context){    return zepto.init(selector, context)  }  function extend(target, source, deep) {    for (key in source)      if (deep && (isPlainObject(source[key]) || isArray(source[key]))) {        if (isPlainObject(source[key]) && !isPlainObject(target[key]))          target[key] = {}        if (isArray(source[key]) && !isArray(target[key]))          target[key] = []        extend(target[key], source[key], deep)      }      else if (source[key] !== undefined) target[key] = source[key]  }  // Copy all but undefined properties from one or more  // objects to the `target` object.  $.extend = function(target){    var deep, args = slice.call(arguments, 1)    if (typeof target == 'boolean') {      deep = target      target = args.shift()    }    args.forEach(function(arg){ extend(target, arg, deep) })    return target  }  // `$.zepto.qsa` is Zepto's CSS selector implementation which  // uses `document.querySelectorAll` and optimizes for some special cases, like `#id`.  // This method can be overridden in plugins.  zepto.qsa = function(element, selector){    var found,        maybeID = selector[0] == '#',        maybeClass = !maybeID && selector[0] == '.',        nameOnly = maybeID || maybeClass ? selector.slice(1) : selector, // Ensure that a 1 char tag name still gets checked        isSimple = simpleSelectorRE.test(nameOnly)    return (element.getElementById && isSimple && maybeID) ? // Safari DocumentFragment doesn't have getElementById      ( (found = element.getElementById(nameOnly)) ? [found] : [] ) :      (element.nodeType !== 1 && element.nodeType !== 9 && element.nodeType !== 11) ? [] :      slice.call(        isSimple && !maybeID && element.getElementsByClassName ? // DocumentFragment doesn't have getElementsByClassName/TagName          maybeClass ? element.getElementsByClassName(nameOnly) : // If it's simple, it could be a class          element.getElementsByTagName(selector) : // Or a tag          element.querySelectorAll(selector) // Or it's not simple, and we need to query all      )  }  function filtered(nodes, selector) {    return selector == null ? $(nodes) : $(nodes).filter(selector)  }  $.contains = document.documentElement.contains ?    function(parent, node) {      return parent !== node && parent.contains(node)    } :    function(parent, node) {      while (node && (node = node.parentNode))        if (node === parent) return true      return false    }  function funcArg(context, arg, idx, payload) {    return isFunction(arg) ? arg.call(context, idx, payload) : arg  }  function setAttribute(node, name, value) {    value == null ? node.removeAttribute(name) : node.setAttribute(name, value)  }  // access className property while respecting SVGAnimatedString  function className(node, value){    var klass = node.className || '',        svg   = klass && klass.baseVal !== undefined    if (value === undefined) return svg ? klass.baseVal : klass    svg ? (klass.baseVal = value) : (node.className = value)  }  // "true"  => true  // "false" => false  // "null"  => null  // "42"    => 42  // "42.5"  => 42.5  // "08"    => "08"  // JSON    => parse if valid  // String  => self  function deserializeValue(value) {    try {      return value ?        value == "true" ||        ( value == "false" ? false :          value == "null" ? null :          +value + "" == value ? +value :          /^[\[\{]/.test(value) ? $.parseJSON(value) :          value )        : value    } catch(e) {      return value    }  }  $.type = type  $.isFunction = isFunction  $.isWindow = isWindow  $.isArray = isArray  $.isPlainObject = isPlainObject  $.isEmptyObject = function(obj) {    var name    for (name in obj) return false    return true  }  $.isNumeric = function(val) {    var num = Number(val), type = typeof val    return val != null && type != 'boolean' &&      (type != 'string' || val.length) &&      !isNaN(num) && isFinite(num) || false  }  $.inArray = function(elem, array, i){    return emptyArray.indexOf.call(array, elem, i)  }  $.camelCase = camelize  $.trim = function(str) {    return str == null ? "" : String.prototype.trim.call(str)  }  // plugin compatibility  $.uuid = 0  $.support = { }  $.expr = { }  $.noop = function() {}  $.map = function(elements, callback){    var value, values = [], i, key    if (likeArray(elements))      for (i = 0; i < elements.length; i++) {        value = callback(elements[i], i)        if (value != null) values.push(value)      }    else      for (key in elements) {        value = callback(elements[key], key)        if (value != null) values.push(value)      }    return flatten(values)  }  $.each = function(elements, callback){    var i, key    if (likeArray(elements)) {      for (i = 0; i < elements.length; i++)        if (callback.call(elements[i], i, elements[i]) === false) return elements    } else {      for (key in elements)        if (callback.call(elements[key], key, elements[key]) === false) return elements    }    return elements  }  $.grep = function(elements, callback){    return filter.call(elements, callback)  }  if (window.JSON) $.parseJSON = JSON.parse  // Populate the class2type map  $.each("Boolean Number String Function Array Date RegExp Object Error".split(" "), function(i, name) {    class2type[ "[object " + name + "]" ] = name.toLowerCase()  })  // Define methods that will be available on all  // Zepto collections  $.fn = {    constructor: zepto.Z,    length: 0,    // Because a collection acts like an array    // copy over these useful array functions.    forEach: emptyArray.forEach,    reduce: emptyArray.reduce,    push: emptyArray.push,    sort: emptyArray.sort,    splice: emptyArray.splice,    indexOf: emptyArray.indexOf,    concat: function(){      var i, value, args = []      for (i = 0; i < arguments.length; i++) {        value = arguments[i]        args[i] = zepto.isZ(value) ? value.toArray() : value      }      return concat.apply(zepto.isZ(this) ? this.toArray() : this, args)    },    // `map` and `slice` in the jQuery API work differently    // from their array counterparts    map: function(fn){      return $($.map(this, function(el, i){ return fn.call(el, i, el) }))    },    slice: function(){      return $(slice.apply(this, arguments))    },    ready: function(callback){      // need to check if document.body exists for IE as that browser reports      // document ready when it hasn't yet created the body element      if (readyRE.test(document.readyState) && document.body) callback($)      else document.addEventListener('DOMContentLoaded', function(){ callback($) }, false)      return this    },    get: function(idx){      return idx === undefined ? slice.call(this) : this[idx >= 0 ? idx : idx + this.length]    },    toArray: function(){ return this.get() },    size: function(){      return this.length    },    remove: function(){      return this.each(function(){        if (this.parentNode != null)          this.parentNode.removeChild(this)      })    },    each: function(callback){      emptyArray.every.call(this, function(el, idx){        return callback.call(el, idx, el) !== false      })      return this    },    filter: function(selector){      if (isFunction(selector)) return this.not(this.not(selector))      return $(filter.call(this, function(element){        return zepto.matches(element, selector)      }))    },    add: function(selector,context){      return $(uniq(this.concat($(selector,context))))    },    is: function(selector){      return this.length > 0 && zepto.matches(this[0], selector)    },    not: function(selector){      var nodes=[]      if (isFunction(selector) && selector.call !== undefined)        this.each(function(idx){          if (!selector.call(this,idx)) nodes.push(this)        })      else {        var excludes = typeof selector == 'string' ? this.filter(selector) :          (likeArray(selector) && isFunction(selector.item)) ? slice.call(selector) : $(selector)        this.forEach(function(el){          if (excludes.indexOf(el) < 0) nodes.push(el)        })      }      return $(nodes)    },    has: function(selector){      return this.filter(function(){        return isObject(selector) ?          $.contains(this, selector) :          $(this).find(selector).size()      })    },    eq: function(idx){      return idx === -1 ? this.slice(idx) : this.slice(idx, + idx + 1)    },    first: function(){      var el = this[0]      return el && !isObject(el) ? el : $(el)    },    last: function(){      var el = this[this.length - 1]      return el && !isObject(el) ? el : $(el)    },    find: function(selector){      var result, $this = this      if (!selector) result = $()      else if (typeof selector == 'object')        result = $(selector).filter(function(){          var node = this          return emptyArray.some.call($this, function(parent){            return $.contains(parent, node)          })        })      else if (this.length == 1) result = $(zepto.qsa(this[0], selector))      else result = this.map(function(){ return zepto.qsa(this, selector) })      return result    },    closest: function(selector, context){      var nodes = [], collection = typeof selector == 'object' && $(selector)      this.each(function(_, node){        while (node && !(collection ? collection.indexOf(node) >= 0 : zepto.matches(node, selector)))          node = node !== context && !isDocument(node) && node.parentNode        if (node && nodes.indexOf(node) < 0) nodes.push(node)      })      return $(nodes)    },    parents: function(selector){      var ancestors = [], nodes = this      while (nodes.length > 0)        nodes = $.map(nodes, function(node){          if ((node = node.parentNode) && !isDocument(node) && ancestors.indexOf(node) < 0) {            ancestors.push(node)            return node          }        })      return filtered(ancestors, selector)    },    parent: function(selector){      return filtered(uniq(this.pluck('parentNode')), selector)    },    children: function(selector){      return filtered(this.map(function(){ return children(this) }), selector)    },    contents: function() {      return this.map(function() { return this.contentDocument || slice.call(this.childNodes) })    },    siblings: function(selector){      return filtered(this.map(function(i, el){        return filter.call(children(el.parentNode), function(child){ return child!==el })      }), selector)    },    empty: function(){      return this.each(function(){ this.innerHTML = '' })    },    // `pluck` is borrowed from Prototype.js    pluck: function(property){      return $.map(this, function(el){ return el[property] })    },    show: function(){      return this.each(function(){        this.style.display == "none" && (this.style.display = '')        if (getComputedStyle(this, '').getPropertyValue("display") == "none")          this.style.display = defaultDisplay(this.nodeName)      })    },    replaceWith: function(newContent){      return this.before(newContent).remove()    },    wrap: function(structure){      var func = isFunction(structure)      if (this[0] && !func)        var dom   = $(structure).get(0),            clone = dom.parentNode || this.length > 1      return this.each(function(index){        $(this).wrapAll(          func ? structure.call(this, index) :            clone ? dom.cloneNode(true) : dom        )      })    },    wrapAll: function(structure){      if (this[0]) {        $(this[0]).before(structure = $(structure))        var children        // drill down to the inmost element        while ((children = structure.children()).length) structure = children.first()        $(structure).append(this)      }      return this    },    wrapInner: function(structure){      var func = isFunction(structure)      return this.each(function(index){        var self = $(this), contents = self.contents(),            dom  = func ? structure.call(this, index) : structure        contents.length ? contents.wrapAll(dom) : self.append(dom)      })    },    unwrap: function(){      this.parent().each(function(){        $(this).replaceWith($(this).children())      })      return this    },    clone: function(){      return this.map(function(){ return this.cloneNode(true) })    },    hide: function(){      return this.css("display", "none")    },    toggle: function(setting){      return this.each(function(){        var el = $(this)        ;(setting === undefined ? el.css("display") == "none" : setting) ? el.show() : el.hide()      })    },    prev: function(selector){ return $(this.pluck('previousElementSibling')).filter(selector || '*') },    next: function(selector){ return $(this.pluck('nextElementSibling')).filter(selector || '*') },    html: function(html){      return 0 in arguments ?        this.each(function(idx){          var originHtml = this.innerHTML          $(this).empty().append( funcArg(this, html, idx, originHtml) )        }) :        (0 in this ? this[0].innerHTML : null)    },    text: function(text){      return 0 in arguments ?        this.each(function(idx){          var newText = funcArg(this, text, idx, this.textContent)          this.textContent = newText == null ? '' : ''+newText        }) :        (0 in this ? this.pluck('textContent').join("") : null)    },    attr: function(name, value){      var result      return (typeof name == 'string' && !(1 in arguments)) ?        (0 in this && this[0].nodeType == 1 && (result = this[0].getAttribute(name)) != null ? result : undefined) :        this.each(function(idx){          if (this.nodeType !== 1) return          if (isObject(name)) for (key in name) setAttribute(this, key, name[key])          else setAttribute(this, name, funcArg(this, value, idx, this.getAttribute(name)))        })    },    removeAttr: function(name){      return this.each(function(){ this.nodeType === 1 && name.split(' ').forEach(function(attribute){        setAttribute(this, attribute)      }, this)})    },    prop: function(name, value){      name = propMap[name] || name      return (1 in arguments) ?        this.each(function(idx){          this[name] = funcArg(this, value, idx, this[name])        }) :        (this[0] && this[0][name])    },    removeProp: function(name){      name = propMap[name] || name      return this.each(function(){ delete this[name] })    },    data: function(name, value){      var attrName = 'data-' + name.replace(capitalRE, '-$1').toLowerCase()      var data = (1 in arguments) ?        this.attr(attrName, value) :        this.attr(attrName)      return data !== null ? deserializeValue(data) : undefined    },    val: function(value){      if (0 in arguments) {        if (value == null) value = ""        return this.each(function(idx){          this.value = funcArg(this, value, idx, this.value)        })      } else {        return this[0] && (this[0].multiple ?           $(this[0]).find('option').filter(function(){ return this.selected }).pluck('value') :           this[0].value)      }    },    offset: function(coordinates){      if (coordinates) return this.each(function(index){        var $this = $(this),            coords = funcArg(this, coordinates, index, $this.offset()),            parentOffset = $this.offsetParent().offset(),            props = {              top:  coords.top  - parentOffset.top,              left: coords.left - parentOffset.left            }        if ($this.css('position') == 'static') props['position'] = 'relative'        $this.css(props)      })      if (!this.length) return null      if (document.documentElement !== this[0] && !$.contains(document.documentElement, this[0]))        return {top: 0, left: 0}      var obj = this[0].getBoundingClientRect()      return {        left: obj.left + window.pageXOffset,        top: obj.top + window.pageYOffset,        width: Math.round(obj.width),        height: Math.round(obj.height)      }    },    css: function(property, value){      if (arguments.length < 2) {        var element = this[0]        if (typeof property == 'string') {          if (!element) return          return element.style[camelize(property)] || getComputedStyle(element, '').getPropertyValue(property)        } else if (isArray(property)) {          if (!element) return          var props = {}          var computedStyle = getComputedStyle(element, '')          $.each(property, function(_, prop){            props[prop] = (element.style[camelize(prop)] || computedStyle.getPropertyValue(prop))          })          return props        }      }      var css = ''      if (type(property) == 'string') {        if (!value && value !== 0)          this.each(function(){ this.style.removeProperty(dasherize(property)) })        else          css = dasherize(property) + ":" + maybeAddPx(property, value)      } else {        for (key in property)          if (!property[key] && property[key] !== 0)            this.each(function(){ this.style.removeProperty(dasherize(key)) })          else            css += dasherize(key) + ':' + maybeAddPx(key, property[key]) + ';'      }      return this.each(function(){ this.style.cssText += ';' + css })    },    index: function(element){      return element ? this.indexOf($(element)[0]) : this.parent().children().indexOf(this[0])    },    hasClass: function(name){      if (!name) return false      return emptyArray.some.call(this, function(el){        return this.test(className(el))      }, classRE(name))    },    addClass: function(name){      if (!name) return this      return this.each(function(idx){        if (!('className' in this)) return        classList = []        var cls = className(this), newName = funcArg(this, name, idx, cls)        newName.split(/\s+/g).forEach(function(klass){          if (!$(this).hasClass(klass)) classList.push(klass)        }, this)        classList.length && className(this, cls + (cls ? " " : "") + classList.join(" "))      })    },    removeClass: function(name){      return this.each(function(idx){        if (!('className' in this)) return        if (name === undefined) return className(this, '')        classList = className(this)        funcArg(this, name, idx, classList).split(/\s+/g).forEach(function(klass){          classList = classList.replace(classRE(klass), " ")        })        className(this, classList.trim())      })    },    toggleClass: function(name, when){      if (!name) return this      return this.each(function(idx){        var $this = $(this), names = funcArg(this, name, idx, className(this))        names.split(/\s+/g).forEach(function(klass){          (when === undefined ? !$this.hasClass(klass) : when) ?            $this.addClass(klass) : $this.removeClass(klass)        })      })    },    scrollTop: function(value){      if (!this.length) return      var hasScrollTop = 'scrollTop' in this[0]      if (value === undefined) return hasScrollTop ? this[0].scrollTop : this[0].pageYOffset      return this.each(hasScrollTop ?        function(){ this.scrollTop = value } :        function(){ this.scrollTo(this.scrollX, value) })    },    scrollLeft: function(value){      if (!this.length) return      var hasScrollLeft = 'scrollLeft' in this[0]      if (value === undefined) return hasScrollLeft ? this[0].scrollLeft : this[0].pageXOffset      return this.each(hasScrollLeft ?        function(){ this.scrollLeft = value } :        function(){ this.scrollTo(value, this.scrollY) })    },    position: function() {      if (!this.length) return      var elem = this[0],        // Get *real* offsetParent        offsetParent = this.offsetParent(),        // Get correct offsets        offset       = this.offset(),        parentOffset = rootNodeRE.test(offsetParent[0].nodeName) ? { top: 0, left: 0 } : offsetParent.offset()      // Subtract element margins      // note: when an element has margin: auto the offsetLeft and marginLeft      // are the same in Safari causing offset.left to incorrectly be 0      offset.top  -= parseFloat( $(elem).css('margin-top') ) || 0      offset.left -= parseFloat( $(elem).css('margin-left') ) || 0      // Add offsetParent borders      parentOffset.top  += parseFloat( $(offsetParent[0]).css('border-top-width') ) || 0      parentOffset.left += parseFloat( $(offsetParent[0]).css('border-left-width') ) || 0      // Subtract the two offsets      return {        top:  offset.top  - parentOffset.top,        left: offset.left - parentOffset.left      }    },    offsetParent: function() {      return this.map(function(){        var parent = this.offsetParent || document.body        while (parent && !rootNodeRE.test(parent.nodeName) && $(parent).css("position") == "static")          parent = parent.offsetParent        return parent      })    }  }  // for now  $.fn.detach = $.fn.remove  // Generate the `width` and `height` functions  ;['width', 'height'].forEach(function(dimension){    var dimensionProperty =      dimension.replace(/./, function(m){ return m[0].toUpperCase() })    $.fn[dimension] = function(value){      var offset, el = this[0]      if (value === undefined) return isWindow(el) ? el['inner' + dimensionProperty] :        isDocument(el) ? el.documentElement['scroll' + dimensionProperty] :        (offset = this.offset()) && offset[dimension]      else return this.each(function(idx){        el = $(this)        el.css(dimension, funcArg(this, value, idx, el[dimension]()))      })    }  })  function traverseNode(node, fun) {    fun(node)    for (var i = 0, len = node.childNodes.length; i < len; i++)      traverseNode(node.childNodes[i], fun)  }  // Generate the `after`, `prepend`, `before`, `append`,  // `insertAfter`, `insertBefore`, `appendTo`, and `prependTo` methods.  adjacencyOperators.forEach(function(operator, operatorIndex) {    var inside = operatorIndex % 2 //=> prepend, append    $.fn[operator] = function(){      // arguments can be nodes, arrays of nodes, Zepto objects and HTML strings      var argType, nodes = $.map(arguments, function(arg) {            var arr = []            argType = type(arg)            if (argType == "array") {              arg.forEach(function(el) {                if (el.nodeType !== undefined) return arr.push(el)                else if ($.zepto.isZ(el)) return arr = arr.concat(el.get())                arr = arr.concat(zepto.fragment(el))              })              return arr            }            return argType == "object" || arg == null ?              arg : zepto.fragment(arg)          }),          parent, copyByClone = this.length > 1      if (nodes.length < 1) return this      return this.each(function(_, target){        parent = inside ? target : target.parentNode        // convert all methods to a "before" operation        target = operatorIndex == 0 ? target.nextSibling :                 operatorIndex == 1 ? target.firstChild :                 operatorIndex == 2 ? target :                 null        var parentInDocument = $.contains(document.documentElement, parent)        nodes.forEach(function(node){          if (copyByClone) node = node.cloneNode(true)          else if (!parent) return $(node).remove()          parent.insertBefore(node, target)          if (parentInDocument) traverseNode(node, function(el){            if (el.nodeName != null && el.nodeName.toUpperCase() === 'SCRIPT' &&               (!el.type || el.type === 'text/javascript') && !el.src){              var target = el.ownerDocument ? el.ownerDocument.defaultView : window              target['eval'].call(target, el.innerHTML)            }          })        })      })    }    // after    => insertAfter    // prepend  => prependTo    // before   => insertBefore    // append   => appendTo    $.fn[inside ? operator+'To' : 'insert'+(operatorIndex ? 'Before' : 'After')] = function(html){      $(html)[operator](this)      return this    }  })  zepto.Z.prototype = Z.prototype = $.fn  // Export internal API functions in the `$.zepto` namespace  zepto.uniq = uniq  zepto.deserializeValue = deserializeValue  $.zepto = zepto  return $})()// If `$` is not yet defined, point it to `Zepto`window.Zepto = Zeptowindow.$ === undefined && (window.$ = Zepto)

 

地址：https://github.com/madrobby/zepto/blob/master/src/zepto.js#files