javascript 的类式继承（构造函数）

Posted 2020-10-17 杜俊锋

<script type="text/javascript">   
//类式继承（构造函数）
var father = function(){
    this.age = 52;
    this.say =function(){
        alert(\'hello i am\'+this.name+\'and i am\'+this.age+\'years old\')
    }
}
var child = function(){
    this.name = \'bill\';
    father.call(this);
}
var man = new child();
man.say();



</script>