chuck
/
es6-11study


			
				
					
						
						
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<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <script>
        //Object.is 判断两个值是否完全相等
        console.log(Object.is(123,123)) // true
        console.log(Object.is(NaN,NaN)) //true
        console.log(NaN === NaN)  //false

        //Object.assgin 对象合并
        const config1 = {
            a:1,
            b:2
        }
        const config2 = {
            c:3,
            a:5
        }
        console.log(Object.assign(config1,config2)) //{a: 5, b: 2, c: 3}

        // Object.setPrototypeof 设置原型对象
        const school = {
            name:'qinghua'
        }
        const cities = {
            xiaoqu:['北京','上海']
        }
        Object.setPrototypeOf(school,cities)
        console.log(Object.getPrototypeOf(school))
        console.log(school)

    </script>
</body>
</html>