js原型补充

js定义函数：

<script>

    function A() {}

    let a1 = new A();

    let a2 = new A();

    // 为A类添加原型 => 类似于类属性

    A.prototype.num = 100;

    console.log(a1.num);

    console.log(a2.num);

</script>

ES6语法下类

class B {

    constructor(name) {

        this.name = name;

    }

}

let b1 = new B('Tom');

let b2 = new B('Ben');

B.prototype.count = 666;

console.log(b1.count);

console.log(b2.count);

console.log(b1.name);

console.log(b2.name);

巴特西

js原型补充

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