JavaScript里没有继承关键字，想要继承一个类需要用到“对象冒充”。5 Y3 i- A5 y1 ?3 n/ w
<script type = 'text/javascript'>
function Person(name , age){
this.name = name ;
this.age = age ;
this.say = function (){
return "name : "+ this.name + " age: "+this.age ;
} ;
}
var o = new Object() ;//可以简化为Object()
Person.call(o , "zhangsan" , 20) ;
console.log(o.say() );//name : zhangsan age: 20
</script>
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发表于 2020-8-29 08:06:36