js的继承实现 

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
  <h2>js中的继承</h2>
</body>
<script>
  function extend(distinct,src) {
    if(typeof src === 'object'){
      for(var name in src){
        distinct.prototype[name] = src[name];
      }
    }else{
      for(var name in src.prototype){
        distinct.prototype[name] = src.prototype[name];
      }
    }
    return distinct;
  }

//对象F，子对象-基类
  function F() {}
  F.prototype.name = 'F';//属性name
  
  var f = {
    age:7,
    sex:'aa'
  };

  function P() {

  }
  P.prototype.title = 'T';

  var SuperF = extend(F,f);
  SuperF = extend(SuperF,P);
  var superF = new SuperF();
  alert(superF.name);
  alert(superF.age);
  alert(superF.title)
</script>
</html>

　　

posted @ 2017-11-22 17:49  _风的线条  阅读(228)  评论(0)    收藏  举报