b对象变为a对象的父亲

<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head><meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>sss</title>
</head>
<body>
    
    <script type="text/javascript">
        let a = {
            name:"hhhh"
        };

        let b = {
            url :"zzzzzzzzzzzzz"
        };

        Object.setPrototypeOf(a,b);
        console.log(a); 

        /*
            Objectname: "hhhh"
            __proto__: 
            url: "zzzzzzzzzzzzz"
            __proto__: Object

            
        */
    </script>

</body>
</html>
【推广】 免费学中医，健康全家人
原文地址：https://www.cnblogs.com/angdh/p/14828332.html