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    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
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<body>
    <script>
        /**
         * 2.构造函数的继承(call/apply)
         * 
        */
       function Father() {
          this.name = 'LiLi';
          this.color = 'red';
          this.arr = [1,2,3];
          this.fn1 = function() {
            console.log("这是第一个方法");
          }
       }
       Father.prototype.getColor = function() {
          return this.color;
       }
       function Child() {
          Father.call(this);
       }
       let newChild = new Child();
       newChild.fn1();
       console.log(newChild);
       let a1 = new Child();
       let a2 = new Child();
       a1.name += 10;
       a2.name += 20;
       a2.arr.push(10);
       console.log(a1,'a1');
       console.log(a2,'a2');
       /**
        * 构造函数继承可以解决原型链继承的同时修改引用数据类型的缺点
        * 可以使用父级构造函数上的属性和方法
        * 不可以使用父级原型上的属性和方法 
       */
       console.log(newChild.getColor());

       

    </script>
</body>
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