标签：The 构造 img name ati ble fun init 继承
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<script>
// 借用父构造函数继承属性
// 1. 父构造函数
function Father(uname, age) {
// this 指向父构造函数的对象实例
this.uname = uname;
this.age = age;
}
// 2 .子构造函数
function Son(uname, age, score) {
// this 指向子构造函数的对象实例
Father.call(this, uname, age); // （1）实例化Father，传递uname、age参数；（2）让父构造函数的this指向子构造函数的this，这样子构造函数就可以使用父构造函数的uname、ag，相当于让son添加了uname、age属性
this.score = score;
}
var son = new Son('刘德华', 18, 100);
console.log(son);
</script>
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标签：The 构造 img name ati ble fun init 继承
原文地址：https://www.cnblogs.com/jianjie/p/12222706.html
