手记

ES6 class_01 ..........

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
</head>
<body>

</body>
</html>
<script type="text/javascript">
{
    class Ponit{
        /*构造器的作用,初始化类定义的属性和方法*/
        constructor(x,y){
            this.x=x;
            this.y=y;
        }
    }
    /*逻辑值转换字符串*/
    Ponit.prototype.getVal=function(){
        var res=this.x+this.y;
        /*函数出口,把值外面处理*/
        return res;
    }

    var obj = new Ponit(5,8);
    console.log( obj.getVal() );
}
</script>
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