摘要:
关于JS引擎对var与function预解析+浅析JS运行机制var money =110;function say(){ alert(window.money);//110 alert(jj);//报错alert(money);//undefinedvar money = 200;alert(money);//200}say();下面来看看varclassA=function(){ this.prop1=1;}classA.prototype.func1=function(){ varthat=this, var1=2; functiona(){ returnfunction(... 阅读全文