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avalon.js
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/*==================================================
Copyright (c) 2013-2015 司徒正美 and other contributors
http://www.cnblogs.com/rubylouvre/
https://github.com/RubyLouvre
http://weibo.com/jslouvre/
Released under the MIT license
avalon.js 1.43 built in 2015.5.8
用于后端渲染
*/
(function(){
var parse5 = require('parse5')
var parser = new parse5.Parser()
var expose = Date.now()
function log() {
if (avalon.config.debug) {
// http://stackoverflow.com/questions/8785624/how-to-safely-wrap-console-log
console.log.apply(console, arguments)
}
}
/**
* Creates a new object without a prototype. This object is useful for lookup without having to
* guard against prototypically inherited properties via hasOwnProperty.
*
* Related micro-benchmarks:
* - http://jsperf.com/object-create2
* - http://jsperf.com/proto-map-lookup/2
* - http://jsperf.com/for-in-vs-object-keys2
*/
var window = {}
function createMap() {
return Object.create(null)
}
var subscribers = "$" + expose
var otherRequire = window.require
var otherDefine = window.define
var innerRequire
var stopRepeatAssign = false
var rword = /[^, ]+/g //切割字符串为一个个小块,以空格或豆号分开它们,结合replace实现字符串的forEach
var rcomplexType = /^(?:object|array)$/
var rsvg = /^\[object SVG\w*Element\]$/
var rwindow = /^\[object (?:Window|DOMWindow|global)\]$/
var oproto = Object.prototype
var ohasOwn = oproto.hasOwnProperty
var serialize = oproto.toString
var ap = Array.prototype
var aslice = ap.slice
var Registry = {} //将函数曝光到此对象上,方便访问器收集依赖
var W3C = true
var class2type = {}
"Boolean Number String Function Array Date RegExp Object Error".replace(rword, function(name) {
class2type["[object " + name + "]"] = name.toLowerCase()
})
function noop() {}
function oneObject(array, val) {
if (typeof array === "string") {
array = array.match(rword) || []
}
var result = {},
value = val !== void 0 ? val : 1
for (var i = 0, n = array.length; i < n; i++) {
result[array[i]] = value
}
return result
}
//生成UUID http://stackoverflow.com/questions/105034/how-to-create-a-guid-uuid-in-javascript
var generateID = function(prefix) {
prefix = prefix || "avalon"
return (prefix + Math.random() + Math.random()).replace(/0\./g, "")
}
var avalon = function(el) { //创建jQuery式的无new 实例化结构
return new avalon.init(el)
}
module.exports = avalon
/*视浏览器情况采用最快的异步回调*/
avalon.nextTick = function(fn) {
process.nextTick(fn)
} // jsh
// https://github.com/rsms/js-lru
var Cache = new function() {// jshint ignore:line
function LRU(maxLength) {
this.size = 0
this.limit = maxLength
this.head = this.tail = void 0
this._keymap = {}
}
var p = LRU.prototype
p.put = function(key, value) {
var entry = {
key: key,
value: value
}
this._keymap[key] = entry
if (this.tail) {
this.tail.newer = entry
entry.older = this.tail
} else {
this.head = entry
}
this.tail = entry
if (this.size === this.limit) {
this.shift()
} else {
this.size++
}
return value
}
p.shift = function() {
var entry = this.head
if (entry) {
this.head = this.head.newer
this.head.older =
entry.newer =
entry.older =
this._keymap[entry.key] = void 0
}
}
p.get = function(key) {
var entry = this._keymap[key]
if (entry === void 0)
return
if (entry === this.tail) {
return entry.value
}
// HEAD--------------TAIL
// <.older .newer>
// <--- add direction --
// A B C <D> E
if (entry.newer) {
if (entry === this.head) {
this.head = entry.newer
}
entry.newer.older = entry.older // C <-- E.
}
if (entry.older) {
entry.older.newer = entry.newer // C. --> E
}
entry.newer = void 0 // D --x
entry.older = this.tail // D. --> E
if (this.tail) {
this.tail.newer = entry // E. <-- D
}
this.tail = entry
return entry.value
}
return LRU
}// jshint ignore:line
/*********************************************************************
* 配置系统 *
**********************************************************************/
function kernel(settings) {
for (var p in settings) {
if (!ohasOwn.call(settings, p))
continue
var val = settings[p]
if (typeof kernel.plugins[p] === "function") {
kernel.plugins[p](val)
} else if (typeof kernel[p] === "object") {
avalon.mix(kernel[p], val)
} else {
kernel[p] = val
}
}
return this
}
var openTag, closeTag, rexpr, rexprg, rbind, rregexp = /[-.*+?^${}()|[\]\/\\]/g
function escapeRegExp(target) {
//http://stevenlevithan.com/regex/xregexp/
//将字符串安全格式化为正则表达式的源码
return (target + "").replace(rregexp, "\\$&")
}
var plugins = {
loader: function (builtin) {
var flag = innerRequire && builtin
window.require = flag ? innerRequire : otherRequire
window.define = flag ? innerRequire.define : otherDefine
},
interpolate: function (array) {
openTag = array[0]
closeTag = array[1]
if (openTag === closeTag) {
throw new SyntaxError("openTag!==closeTag")
} else if (array + "" === "<!--,-->") {
kernel.commentInterpolate = true
} else {
var test = openTag + "test" + closeTag
if (test.indexOf("<") > -1) {
throw new SyntaxError("此定界符不合法")
}
}
var o = escapeRegExp(openTag),
c = escapeRegExp(closeTag)
rexpr = new RegExp(o + "(.*?)" + c)
rexprg = new RegExp(o + "(.*?)" + c, "g")
rbind = new RegExp(o + ".*?" + c + "|\\sms-")
}
}
kernel.debug = true
kernel.plugins = plugins
kernel.plugins['interpolate'](["{{", "}}"])
kernel.paths = {}
kernel.shim = {}
kernel.maxRepeatSize = 100
avalon.config = kernel
/*********************************************************************
* avalon的静态方法定义区 *
**********************************************************************/
avalon.init = function (el) {
this[0] = this.element = el
}
avalon.fn = avalon.prototype = avalon.init.prototype
avalon.type = function (obj) { //取得目标的类型
if (obj == null) {
return String(obj)
}
// 早期的webkit内核浏览器实现了已废弃的ecma262v4标准,可以将正则字面量当作函数使用,因此typeof在判定正则时会返回function
return typeof obj === "object" || typeof obj === "function" ?
class2type[serialize.call(obj)] || "object" :
typeof obj
}
var isFunction = function (fn) {
return serialize.call(fn) === "[object Function]"
}
avalon.isFunction = isFunction
avalon.isWindow = function (obj) {
return rwindow.test(serialize.call(obj))
}
/*判定是否是一个朴素的javascript对象(Object),不是DOM对象,不是BOM对象,不是自定义类的实例*/
avalon.isPlainObject = function (obj) {
// 简单的 typeof obj === "object"检测,会致使用isPlainObject(window)在opera下通不过
return serialize.call(obj) === "[object Object]" && Object.getPrototypeOf(obj) === oproto
}
//与jQuery.extend方法,可用于浅拷贝,深拷贝
avalon.mix = avalon.fn.mix = function () {
var options, name, src, copy, copyIsArray, clone,
target = arguments[0] || {},
i = 1,
length = arguments.length,
deep = false
// 如果第一个参数为布尔,判定是否深拷贝
if (typeof target === "boolean") {
deep = target
target = arguments[1] || {}
i++
}
//确保接受方为一个复杂的数据类型
if (typeof target !== "object" && !isFunction(target)) {
target = {}
}
//如果只有一个参数,那么新成员添加于mix所在的对象上
if (i === length) {
target = this
i--
}
for (; i < length; i++) {
//只处理非空参数
if ((options = arguments[i]) != null) {
for (name in options) {
src = target[name]
copy = options[name]
// 防止环引用
if (target === copy) {
continue
}
if (deep && copy && (avalon.isPlainObject(copy) || (copyIsArray = Array.isArray(copy)))) {
if (copyIsArray) {
copyIsArray = false
clone = src && Array.isArray(src) ? src : []
} else {
clone = src && avalon.isPlainObject(src) ? src : {}
}
target[name] = avalon.mix(deep, clone, copy)
} else if (copy !== void 0) {
target[name] = copy
}
}
}
}
return target
}
function _number(a, len) { //用于模拟slice, splice的效果
a = Math.floor(a) || 0
return a < 0 ? Math.max(len + a, 0) : Math.min(a, len);
}
avalon.mix({
rword: rword,
subscribers: subscribers,
version: 1.43,
ui: {},
log: log,
slice: function (nodes, start, end) {
return aslice.call(nodes, start, end)
},
noop: noop,
/*如果不用Error对象封装一下,str在控制台下可能会乱码*/
error: function (str, e) {
throw new (e || Error)(str)// jshint ignore:line
},
/*将一个以空格或逗号隔开的字符串或数组,转换成一个键值都为1的对象*/
oneObject: oneObject,
/* avalon.range(10)
=> [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
avalon.range(1, 11)
=> [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
avalon.range(0, 30, 5)
=> [0, 5, 10, 15, 20, 25]
avalon.range(0, -10, -1)
=> [0, -1, -2, -3, -4, -5, -6, -7, -8, -9]
avalon.range(0)
=> []*/
range: function (start, end, step) { // 用于生成整数数组
step || (step = 1)
if (end == null) {
end = start || 0
start = 0
}
var index = -1,
length = Math.max(0, Math.ceil((end - start) / step)),
result = new Array(length)
while (++index < length) {
result[index] = start
start += step
}
return result
},
eventHooks: {},
/*绑定事件*/
bind: function (el, type, fn, phase) {
console.warn("string-avalon不存在bind方法")
},
/*卸载事件*/
unbind: function (el, type, fn, phase) {
console.warn("string-avalon不存在unbind方法")
},
/*读写删除元素节点的样式*/
css: function (node, name, value) {
console.warn("string-avalon不存在css方法")
},
/*遍历数组与对象,回调的第一个参数为索引或键名,第二个或元素或键值*/
each: function (obj, fn) {
if (obj) { //排除null, undefined
var i = 0
if (isArrayLike(obj)) {
for (var n = obj.length; i < n; i++) {
if (fn(i, obj[i]) === false)
break
}
} else {
for (i in obj) {
if (obj.hasOwnProperty(i) && fn(i, obj[i]) === false) {
break
}
}
}
}
},
//收集元素的data-{{prefix}}-*属性,并转换为对象
getWidgetData: function (elem, prefix) {
var raw = avalon(elem).data()
var result = {}
for (var i in raw) {
if (i.indexOf(prefix) === 0) {
result[i.replace(prefix, "").replace(/\w/, function (a) {
return a.toLowerCase()
})] = raw[i]
}
}
return result
},
Array: {
/*只有当前数组不存在此元素时只添加它*/
ensure: function (target, item) {
if (target.indexOf(item) === -1) {
return target.push(item)
}
},
/*移除数组中指定位置的元素,返回布尔表示成功与否*/
removeAt: function (target, index) {
return !!target.splice(index, 1).length
},
/*移除数组中第一个匹配传参的那个元素,返回布尔表示成功与否*/
remove: function (target, item) {
var index = target.indexOf(item)
if (~index)
return avalon.Array.removeAt(target, index)
return false
}
}
})
var bindingHandlers = avalon.bindingHandlers = {}
var bindingExecutors = avalon.bindingExecutors = {}
/*判定是否类数组,如节点集合,纯数组,arguments与拥有非负整数的length属性的纯JS对象*/
function isArrayLike(obj) {
if (obj && typeof obj === "object") {
var n = obj.length,
str = serialize.call(obj)
if (/(Array|List|Collection|Map|Arguments)\]$/.test(str)) {
return true
} else if (str === "[object Object]" && n === (n >>> 0)) {
return true //由于ecma262v5能修改对象属性的enumerable,因此不能用propertyIsEnumerable来判定了
}
}
return false
}
var DOM = {
ids: {},
getAttribute: function (elem, name) {
var attrs = elem.attrs || []
for (var i = 0, attr; attr = attrs[i++]; ) {
if (attr.name === name)
return attr.value
}
},
nodeType: function (elem) {
if (elem.nodeName === elem.tagName) {
return 1
}
switch (elem.nodeName + "") {
case "undefined":
return 2
case "#text":
return 3
case "#comment":
return 8
case "#document":
return 9
case "#document-type":
return 10
case "#document-fragment":
return 11
}
return 2
},
hasAttribute: function (el, name) {
var value = DOM.getAttribute(el, name)
return typeof value === "string"
},
setAttribute: function (elem, key, value) {
var attrs = elem.attrs || (elem.attrs = [])
for (var i = 0; i < attrs.length; i++) {
var attr = attrs[i]
if (attr.name === key) {
attr.value = value
return elem
}
}
attrs.push({
name: key,
value: value
})
return elem
},
setBoolAttribute: function (elem, name, value) {
if (value) {
DOM.setAttribute(elem, name, name)
} else {
DOM.removeAttribute(elem, name)
}
},
removeAttribute: function (elem, name) {
var attrs = elem.attrs || []
for (var i = attrs.length, attr; attr = attrs[--i]; ) {
if (attr.name === name) {
attrs.splice(i, 1)
break
}
}
return elem
},
innerText: function (elem, text) {
elem.childNodes = [
{
nodeName: "#text",
nodeType: 3,
value: text,
parentNode: elem
}
]
},
createElement: function (tagName) {
return {
nodeName: tagName,
tagName: tagName,
attrs: [],
namespaceURI: 'http://www.w3.org/1999/xhtml',
nodeType: 1,
childNodes: []
}
},
outerHTML: function (elem) {
var serializer = new parse5.Serializer();
var doc = {
nodeName: "#document",
quirksNode: false
}
elem.parentNode = doc
doc.childNodes = [elem]
return serializer.serialize(doc)
},
innerHTML: function (parent, html) {
var fragment = parser.parseFragment(html)
var nodes = fragment.childNodes
for (var i = 0, node; node = nodes[i++]; ) {
node.nodeType = DOM.nodeType(node)
node.parentNode = parent
}
parent.childNodes = nodes
},
appendChild: function (parent, html) {
var nodes = [].concat(html)
for (var i = 0, node; node = nodes[i++]; ) {
node.parentNode = parent
node.nodeType = DOM.nodeType(node)
parent.childNodes.push(node)
}
},
replaceChild: function (newNode, oldNode) {
var parent = oldNode.parentNode
var childNodes = parent.childNodes
var index = childNodes.indexOf(oldNode)
if (!~index)
return
if (Array.isArray(newNode)) {
var args = [index, 1]
for (var i = 0, el; el = newNode[i++]; ) {
el.parentNode = parent
args.push(el)
}
Array.prototype.splice.apply(childNodes, args)
} else {
newNode.parentNode = parent
Array.prototype.splice.apply(childNodes, [index, 1, newNode])
}
},
removeChild: function (elem) {
var children = elem.parentNode.childNodes
var index = children.indexOf(elem)
if (~index)
children.splice(index, 1)
return elem
},
createComment: function (data) {
return {
parentNode: null,
nodeType: 8,
nodeName: "#comment",
data: data
}
}
}
avalon.parseHTML = function (html) {
return parser.parseFragment(html)
}
avalon.innerHTML = function (parent, html) {
if (parent.tagName)
DOM.innerHTML(parent, html)
}
avalon.clearHTML = function (parent) {
parent.childNodes.length = 0
}
/*********************************************************************
* avalon的原型方法定义区 *
**********************************************************************/
function hyphen(target) {
//转换为连字符线风格
return target.replace(/([a-z\d])([A-Z]+)/g, "$1-$2").toLowerCase()
}
function camelize(target) {
//转换为驼峰风格
if (target.indexOf("-") < 0 && target.indexOf("_") < 0) {
return target //提前判断,提高getStyle等的效率
}
return target.replace(/[-_][^-_]/g, function (match) {
return match.charAt(1).toUpperCase()
})
}
avalon.fn.mix({
hasClass: function (cls) {
var array = this.attr("class") || ""
array = array.split(/\s+/)
return array.indexOf(cls) !== -1
},
toggleClass: function (value, stateVal) {
var className, i = 0
var classNames = String(value).split(/\s+/)
var isBool = typeof stateVal === "boolean"
while ((className = classNames[i++])) {
var state = isBool ? stateVal : !this.hasClass(className)
this[state ? "addClass" : "removeClass"](className)
}
return this
},
addClass: function (cls) {
var array = this.attr("class") || ""
array = array.split(/\s+/)
if (array.indexOf(cls) !== -1) {
array.push(cls)
this.attr("class", array.join(" ").trim())
}
return this
},
removeClass: function (cls) {
var classes = this.attr("class") || ""
classes = (" " + classes + " ").replace(" " + cls + " ", " ").trim()
this.attr("class", classes)
return this
},
attr: function (name, value) {
if (arguments.length === 2) {
DOM.setAttribute(this[0], name, value)
return this
} else {
return DOM.getAttribute(this[0], name)
}
},
data: function (name, value) {
name = "data-" + hyphen(name || "")
switch (arguments.length) {
case 2:
this.attr(name, value)
return this
case 1:
var val = this.attr(name)
return parseData(val)
case 0:
var ret = {}
this[0].attrs.forEach(function (attr) {
if (attr) {
name = attr.name
if (!name.indexOf("data-")) {
name = camelize(name.slice(5))
ret[name] = parseData(attr.value)
}
}
})
return ret
}
},
removeData: function (name) {
name = "data-" + hyphen(name)
this[0].removeAttribute(name)
return this
},
css: function (name, value) {
console.warn("string-avalon不存在fn.css方法")
},
position: function () {
console.warn("string-avalon不存在fn.position方法")
},
offsetParent: function () {
console.warn("string-avalon不存在fn.offsetParent方法")
},
bind: function (type, fn, phase) {
console.warn("string-avalon不存在fn.bind方法")
},
unbind: function (type, fn, phase) {
console.warn("string-avalon不存在fn.unbind方法")
return this
},
val: function (value) {
var node = this[0]
if (node && DOM.nodeType(node) === 1) {
var get = arguments.length === 0
var access = get ? ":get" : ":set"
var fn = valHooks[getValType(node) + access]
if (fn) {
var val = fn(node, value)
} else if (get) {
return (this.attr("value") || "").replace(/\r/g, "")
} else {
this.attr("value", String(value))
}
}
return get ? val : this
}
})
var rbrace = /(?:\{[\s\S]*\}|\[[\s\S]*\])$/
avalon.parseJSON = JSON.parse
function parseData(data) {
try {
if (typeof data === "object")
return data
data = data === "true" ? true :
data === "false" ? false :
data === "null" ? null : +data + "" === data ? +data : rbrace.test(data) ? JSON.parse(data) : data
} catch (e) {
}
return data
}
avalon.each({
scrollLeft: "pageXOffset",
scrollTop: "pageYOffset"
}, function (method, prop) {
avalon.fn[method] = function (val) {
console.warn("string-avalon不存在fn." + method + "方法")
}
})
//=============================css相关==================================
var cssHooks = avalon.cssHooks = createMap()
var prefixes = ["", "-webkit-", "-moz-", "-ms-"] //去掉opera-15的支持
avalon.cssNumber = {}
avalon.cssName = function (name, host, camelCase) {
console.warn("string-avalon不存在avalon.cssName方法")
}
"Width,Height".replace(rword, function (name) { //fix 481
var method = name.toLowerCase()
avalon.fn[method] = function (value) { //会忽视其display
console.warn("string-avalon不存在fn." + method + "方法")
}
avalon.fn["inner" + name] = function () {
console.warn("string-avalon不存在fn.inner" + name + "方法")
}
avalon.fn["outer" + name] = function () {
console.warn("string-avalon不存在fn.outer" + name + "方法")
}
})
avalon.fn.offset = function () { //取得距离页面左右角的坐标
console.warn("string-avalon不存在fn.offset方法")
return {
left: 0,
top: 0
}
}
//=============================val相关=======================
function getValType(elem) {
var ret = elem.tagName.toLowerCase()
return ret === "input" && /checkbox|radio/.test(DOM.getAttribute(elem, "type")) ? "checked" : ret
}
function collectSelectedOptions(children, array) {
for (var i = 0, el; el = children[i++]; ) {
if (el.nodeName.toUpperCase() === "OPTGROUP") {
if (!isDisabled(el))
collectSelectedOptions(el.childNodes || [], array)
} else if (!isDisabled(el) && isSelected(el)) {
array.push(getOptionValue(el))
}
}
}
function collectOptions(children, array) {
for (var i = 0, el; el = children[i++]; ) {
if (el.nodeName.toUpperCase() === "OPTGROUP") {
collectOptions(el.childNodes, array)
} else if (el.nodeName.toUpperCase() === "OPTION") {
array.push(el)
}
}
}
function isDisabled(el) {
return DOM.hasAttribute(el, "disabled")
}
function isSelected(el) {
return DOM.hasAttribute(el, "selected")
}
function isSelectMultiple(el) {
return DOM.hasAttribute(el, "multiple") || DOM.getAttribute(el, "type") === "select-multiple"
}
function getOptionValue(el) {
var value = DOM.getAttribute(el, "value")
if (typeof value === "string")
return value
var text = el.childNodes[0]
if (text)
return text.value
return ""
}
var valHooks = {
"select:get": function (node) {
var array = []
collectSelectedOptions(node.childNodes, array)
var isMultiple = isSelectMultiple(node)
return isMultiple ? array : array[0]
},
"select:set": function (node, values) {
values = [].concat(values) //强制转换为数组
var options = collectOptions(node.childNodes)
var isMultiple = isSelectMultiple(node)
var selectedIndex = -1
for (var i = 0, el; el = options[i]; i++) {
var value = getOptionValue(el)
var toggle = values.indexOf(value) > -1
if (toggle) {
DOM.setAttribute(el, "selected", "selected")
selectedIndex = i
} else {
DOM.removeAttribute(el, "selected")
}
}
if (!isMultiple) {
DOM.setAttribute(node, "selectedIndex", String(selectedIndex))
}
}
}
/*********************************************************************
* 扫描系统 *
**********************************************************************/
avalon.scan = function(elem, vmodel) {
var vmodels = vmodel ? [].concat(vmodel) : []
scanTag(elem, vmodels)
}
//http://www.w3.org/TR/html5/syntax.html#void-elements
var stopScan = oneObject("area,base,basefont,br,col,command,embed,hr,img,input,link,meta,param,source,track,wbr,noscript,script,style,textarea")
function executeBindings(bindings, vmodels) {
for (var i = 0, data; data = bindings[i++];) {
data.vmodels = vmodels
bindingHandlers[data.type](data, vmodels)
if (data.evaluator && data.element && data.element.tagName) { //移除数据绑定,防止被二次解析
//chrome使用removeAttributeNode移除不存在的特性节点时会报错 https://github.com/RubyLouvre/avalon/issues/99
DOM.removeAttribute(data.element, data.name)
// data.element.removeAttribute(data.name)
}
}
bindings.length = 0
}
var rmsAttr = /ms-(\w+)-?(.*)/
var priorityMap = {
"if": 10,
"repeat": 90,
"data": 100,
"widget": 110,
"each": 1400,
"with": 1500,
"duplex": 2000,
"on": 3000
}
var events = oneObject("animationend,blur,change,input,click,dblclick,focus,keydown,keypress,keyup,mousedown,mouseenter,mouseleave,mousemove,mouseout,mouseover,mouseup,scan,scroll,submit")
var obsoleteAttrs = oneObject("value,title,alt,checked,selected,disabled,readonly,enabled")
function bindingSorter(a, b) {
return a.priority - b.priority
}
var getBindingCallback = function(elem, name, vmodels) {
var callback = DOM.getAttribute(elem,name)
if (callback) {
for (var i = 0, vm; vm = vmodels[i++]; ) {
if (vm.hasOwnProperty(callback) && typeof vm[callback] === "function") {
return vm[callback]
}
}
}
}
function scanTag(elem, vmodels) {
if (elem.tagName) {
elem.nodeType = 1
if (DOM.getAttribute(elem, "ms-skip"))
return
if (!DOM.getAttribute(elem, "ms-skip-ctrl")) {
var ctrl = DOM.getAttribute(elem, "ms-important")
if (ctrl) {
elem.attrs.push({
name: "ms-skip-ctrl",
value: "true"
})
var isImporant = true
} else {
ctrl = DOM.getAttribute(elem, "ms-controller")
if (ctrl) {
elem.attrs.push({
name: "ms-skip-ctrl",
value: "true"
})
}
}
if (ctrl) {
var newVmodel = avalon.vmodels[ctrl]
if (!newVmodel) {
return
}
vmodels = isImporant ? [newVmodel] : [newVmodel].concat(vmodels)
}
}
scanAttr(elem, vmodels)
} else if (elem.nodeName === "#document") { //如果是文档
scanNodeArray(elem.childNodes, vmodels)
} else if (elem.nodeName === "#document-fragment") { //如果是文档文型
scanNodeArray(elem.childNodes, vmodels)
}
}
function scanNodeArray(nodes, vmodels) {
for (var i = 0, node; node = nodes[i++]; ) {
scanNode(node, vmodels)
}
}
var scriptTypes = oneObject(["", "text/javascript", "text/ecmascript", "application/ecmascript", "application/javascript"])
function scanNode(node, vmodels) {
switch (DOM.nodeType(node)) {
case 3: //如果是文本节点
node.nodeType = 3
scanText(node, vmodels)
break
case 8: //如果是注释节点
if (kernel.commentInterpolate) {
node.nodeType = 8
scanText(node, vmodels)
}
break
case 1: //如果是元素节点
node.nodeType = 1
var id = DOM.getAttribute(node, "id")
if (id) {
switch (node.nodeName) {
case "script":
var type = DOM.getAttribute(node, "type")
if (type && !scriptTypes[type]) {
DOM.ids[id] = node.childNodes[0].value
}
break
case "textarea":
case "noscript":
DOM.ids[id] = node.childNodes[0].value
break
}
}
scanTag(node, vmodels)
break
}
}
function scanAttr(elem, vmodels) {
var attributes = elem.attrs || []
var bindings = [],
msData = {},
match
for (var i = attributes.length - 1; i >= 0; i--) {
var attr = attributes[i]
if (match = attr.name.match(rmsAttr)) {
//如果是以指定前缀命名的
var type = match[1]
var param = match[2] || ""
var value = attr.value
var name = attr.name
msData[name] = value
if (events[type]) {
param = type
type = "on"
} else if (obsoleteAttrs[type]) {
log("warning!请改用ms-attr-" + type + "代替ms-" + type + "!")
if (type === "enabled") {//吃掉ms-enabled绑定,用ms-disabled代替
log("warning!ms-enabled或ms-attr-enabled已经被废弃")
type = "disabled"
value = "!(" + value + ")"
}
param = type
type = "attr"
name = "ms-attr-" + param
attributes.splice(i, 1, {name: name, value: value})