es6 symbol创建对象属性

symbol创建对象属性

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>symbol创建对象属性</title>

</head>
<body>
<div id="ad">

</div>
<div></div>
<script>

    //向对象添加方法
    let game ={}

    let methods = {
        up:Symbol(),
        down:Symbol()
    };

    game[methods.up] = function () {
        console.log('game add methods up ');
    };

    game[methods.down] = function () {
        console.log('game add methods down ');
    }
    console.log(game);
</script>
</body>
</html>
posted @ 2021-06-21 11:45  胡勇健  阅读(53)  评论(0)    收藏  举报