// Zepto.js
// (c) 2010-2016 Thomas Fuchs
// Zepto.js may be freely distributed under the MIT license.
var Zepto = (function() {
var undefined, key, $, classList, emptyArray = [], concat = emptyArray.concat, filter = emptyArray.filter, slice = emptyArray.slice,
// emptyArray.concat为什么不用Array.Prototype？
document = window.document,
elementDisplay = {}, classCache = {},
cssNumber = { 'column-count': 1, 'columns': 1, 'font-weight': 1, 'line-height': 1,'opacity': 1, 'z-index': 1, 'zoom': 1 },
//各种正则
fragmentRE = /^\s*<(\w+|!)[^>]*>/,
singleTagRE = /^<(\w+)\s*\/?>(?:<\/\1>|)$/,
tagExpanderRE = /<(?!area|br|col|embed|hr|img|input|link|meta|param)(([\w:]+)[^>]*)\/>/ig,
rootNodeRE = /^(?:body|html)$/i,
capitalRE = /([A-Z])/g,
// special attributes that should be get/set via method calls
//应通过方法调用get.set的特殊属性
methodAttributes = ['val', 'css', 'html', 'text', 'data', 'width', 'height', 'offset'],
adjacencyOperators = [ 'after', 'prepend', 'before', 'append' ],
table = document.createElement('table'),
tableRow = document.createElement('tr'),
containers = {
'tr': document.createElement('tbody'),
'tbody': table, 'thead': table, 'tfoot': table,
'td': tableRow, 'th': tableRow,
'*': document.createElement('div')
},
readyRE = /complete|loaded|interactive/,
simpleSelectorRE = /^[\w-]*$/,
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 }
//Array.isArray方法足矣，但是根据JS高级程序设计P88的解释，低版本浏览器并不支持isArray()，所以写成这样
//上面是变量定义
//判断一个元素是否匹配给定的选择器
zepto.matches = function(element, selector) {
//nodeType属性返回被选节点的节点类型介绍,比如元素类型为1，属性attr类型为2；
if (!selector || !element || element.nodeType !== 1) return false
//Element.matches()如果当前元素能被指定的css选择器查找到,则返回true,否则返回false. 参考https://developer.mozilla.org/zh-CN/docs/Web/API/Element/matches
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:
//!parent,如果parent是一个正常的节点的话，会返回false,什么情况下会返回true呢？
var match, parent = element.parentNode, temp = !parent
//当element没有父节点，那么将其插入到一个临时的div-tempParent里面
if (temp) (parent = tempParent).appendChild(element)
match = ~zepto.qsa(parent, selector).indexOf(element)
//将插入的节点删掉
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></$2>")
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] == '.',
//当元素有ID的时候选择元素ID，次选Class,再次再说
nameOnly = maybeID || maybeClass ? selector.slice(1) : selector, // Ensure that a 1 char tag name still gets checked
isSimple = simpleSelectorRE.test(nameOnly)
//如果可以得到元素ID并且通过isSimple正则就返回true
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 `$` is not yet defined, point it to `Zepto`
window.Zepto = Zepto
window.$ === undefined && (window.$ = Zepto)