extjs源码分析-016(Ext....)
Ext.apply(Ext, function(){var E = Ext, idSeed = 0;return { emptyFn : function(){},//空函数 value : function(v, defaultValue, allowBlank){ return Ext.isEmpty(v, allowBlank) ? defaultValue : v; }, escapeRe : function(s) {//对特殊字符转义 return s.replace(/([.*+?^${}()|[\]\/\\])/g, "\\$1"); }, sequence : function(o, name, fn, scope){//创建队列函数 o = o.createSequence(fn, scope); }, addBehaviors : function(o){//添加时间行为 if(!Ext.isReady){ Ext.onReady(function(){ Ext.addBehaviors(o); }); } else { var cache = {}, // simple cache for applying multiple behaviors to same selector does query multiple times parts, b, s; for (b in o) { if ((parts = b.split('@'))) { // for Object prototype breakers s = parts; if(!cache){ cache = Ext.select(s); } cache.on(parts, o); } } cache = null; } }, combine : function(){//数据组合,返回组合后的数据 //把所有参数拼到一个数组中返回 Ext.combine(['a','b'],'c')返回['a','b','c'] var as = arguments, l = as.length, r = []; for(var i = 0; i < l; i++){ var a = as; if(Ext.isArray(a)){ r = r.concat(a); }else if(a.length !== undefined && !a.substr){ r = r.concat(Array.prototype.slice.call(a, 0)); }else{ r.push(a); } } return r; }, copyTo : function(dest, source, names){//把某对象的属性复制给目标对象names为属性名,可以是数组，字符串 * @param {Object} The destination object. * @param {Object} The source object. * @param {Array/String} Either an Array of property names, or a comma-delimited list * of property names to copy. * @return {Object} The modified object. if(typeof names == 'string'){ names = names.split(/[,;\s]/); } Ext.each(names, function(name){ if(source.hasOwnProperty(name)){ dest = source; } }, this); return dest; }, destroy : function(){//清除对象属性,DOM节点 Ext.each(arguments, function(arg){ if(arg){ if(Ext.isArray(arg)){ this.destroy.apply(this, arg); }else if(Ext.isFunction(arg.destroy)){ arg.destroy(); }else if(arg.dom){ arg.remove(); } } }, this); }, destroyMembers : function(o, arg1, arg2, etc){ for(var i = 1, a = arguments, len = a.length; i < len; i++) { Ext.destroy(o]); delete o]; } }, clean : function(arr){ var ret = []; Ext.each(arr, function(v){ if(!!v){ ret.push(v); } }); return ret; }, unique : function(arr){ var ret = [], collect = {}; Ext.each(arr, function(v) { if(!collect){ ret.push(v); } collect = true; }); return ret; }, getCmp : function(id){//获取组建对象 return Ext.ComponentMgr.get(id); }, type : function(o){ if(o === undefined || o === null){ return false; } if(o.htmlElement){ return 'element'; } var t = typeof o; if(t == 'object' && o.nodeName) { switch(o.nodeType) { case 1: return 'element'; case 3: return (/\S/).test(o.nodeValue) ? 'textnode' : 'whitespace'; } } if(t == 'object' || t == 'function') { switch(o.constructor) { case Array: return 'array'; case RegExp: return 'regexp'; case Date: return 'date'; } if(typeof o.length == 'number' && typeof o.item == 'function') { return 'nodelist'; } } return t; }, intercept : function(o, name, fn, scope){ o = o.createInterceptor(fn, scope); }, // internal callback : function(cb, scope, args, delay){ if(Ext.isFunction(cb)){ if(delay){ cb.defer(delay, scope, args || []); }else{ cb.apply(scope, args || []); } } }}})
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