摘要:
//The instanceof Operator//检测 某个对象是否由某个构造构造出来var date=new Date();date instanceof Date;date instanceof Object;date instanceof Number;//javascript中隐藏了hashcode,提供了toString方法 var user = { name:"zhangsan", age:22, toString:function(){ return this.name; } } if(user=="zhangsan"){ alert(
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