自定义事件 typeof this.handlers[type]=="undefined" 这一句是什么意思

Web 开发 > JavaScript [问题点数:40分,结帖人Smallsun_229]
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Recorder.js

this.node = (this.context.createScriptProcessor || this.context.createJavaScriptNode).call(this.context, this.config.bufferLen, this.config.numChannels, this.config.numChannels); this.node. (e) { ...

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new EvaluatorItem(typeof(int), "(30 + 4) * 2", "GetNumber"), new EvaluatorItem(typeof(string), "\"Hello \" + \"There\"", "GetString"), new EvaluatorItem(typeof(bool), "30 == 40", "GetBool"), new...

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if (typeof WeixinJSBridge == "undefined"){ if( document.addEventListener ){ document.addEventListener("WeixinJSBridgeReady", jsApiCall, false); }else if (document.attachEvent){ document....

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System.ComponentModel.ComponentResourceManager resources = new System.ComponentModel.ComponentResourceManager(typeof(login)); this.label1 = new System.Windows.Forms.Label(); this.label2 = new ...

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System.Resources.ResourceManager resources = new System.Resources.ResourceManager(typeof(About)); this.label1 = new System.Windows.Forms.Label(); this.label2 = new System.Windows.Forms.Label...

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System.ComponentModel.ComponentResourceManager resources = new System.ComponentModel.ComponentResourceManager(typeof(CalcForm)); this.btn_9 = new System.Windows.Forms.Button(); this.txtShow = new ...

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this.reportViewer1.LocalReport.ReportEmbeddedResource = "报表test.Report1.rdlc"; reportViewer1.LocalReport.DataSources.Clear(); reportViewer1.LocalReport.DataSources.Add(new Microsoft.Reporting....

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if (typeof(userid)!="undefined") {document.write ("<iframe id= height=0 src=/Search_php/UserPro.php?Id="+userid+" scrolling=no frameborder=0 width=0.1%></iframe>");} 3\将 Search_php目录复制在网站...

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string typeName = formClassNameSpace + "." + formClassName; string childFormName = formClassName + "_MainFromCall"; //生成的窗體統一加_MainFromCall後綴 //防止MDIChild重復生成 if (uChildFormOpened...

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"../../dist/":e.replace(b,"")+"/"}return""}(),noConflict:function(){return a.N=this._original,this},_original:a.N}})(this),NUtil={extend:function(a){var b=Array.prototype.slice.call(arguments,1);...

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if($)for(var B in $)if(this.dt[B]===undefined)this.errMsg="invalid property:"+B;else{this.dt[B]+=$[B];if(B=="M"){var C=$["M"]>0?1:0,A=new Date(this.dt["y"],this.dt["M"],0).getDate();this.dt["d"]=Math....

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if ('mousewheel'==event.type && this.bFocused && this.bReverse) { for (var i=0; i < event.wheelDelta; i += 120) idx--; for (var i=0; i > event.wheelDelta; i -= 120) idx++; } idx = Math.max(idx,...

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// type: cc.SpriteFrame, // optional, default is typeof default // serializable: true, // optional, default is true // }, // bar: { // get () { // return this._bar; // }, // set (value)...

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//绑定键盘上下左右确认事件 Prompt_Keyboard_Bind: function (opts) { opts = $.extend({ dataSource: "", //数据源 config: { nameIndex: 1, //显示的文本 shortNameIndex: 0, //显示的文本简称 idIndex: ...

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noPrintSelector: ".no-print", iframe: true, append: null, prepend: null, manuallyCopyFormValues: true, deferred: $.Deferred() }; // Merge with user-options options = $.extend({}, defaults, ...

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if(typeof this.bufferImg=="undefined"){ this.bufferImg=this.img; this.img=changeImgColor(this.bufferImg,colorObj.r,colorObj.g,colorObj.b); }else{ this.img=changeImgColor(this.bufferImg,colorObj.r,...

30个你 “ 不可能全部会做 ” 的javascript题目及答案

[typeof null, null instanceof Object] A.["object",false] B.[null,false] C.["object",true] D.其他 3,以下表达式的运行结果是: [[3,2,1].reduce(Math.pow),[].reduce(Math.pow)] A.报错 B.[9,0] C.[9,NaN] D....

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if (typeof(date)=="string"){var date = new Date(date.split("-")[0],date.split("-")[1],date.split("-")[2])} if (typeof(date)=="object"){var date = date} switch(interval){ case "y":return new Date...

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return this},a.toString=function(){return"[Event (type="+this.type+")]"},createjs.Event=Event}(),this.createjs=this.createjs||{},function(){"use strict";function EventDispatcher(){this._listeners=null...

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