lovecoding
/
W0407


			
				
					
						
						
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							<!DOCTYPE html>
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<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <script>
        // Object.is() 判断两个值是否全等
        const obj1 = { name: "图图", age: 3 };
        const obj2 = { name1: "刷子", age1: 4 };
        console.log(Object.is(obj1, obj2)); // false
        console.log(Object.is(1, "1")); // false
        // Object.assign() 对象合并 若后面传入的对象中与前面的对象有相同的属性 则覆盖 其余的合并
        console.log(Object.assign(obj1,obj2));
        // const x = {
        //     name:[1,2,3]
        // };
        // console.log(obj2,'obj2')
        // Object.setPrototypeOf(obj2,x);
        // console.log(Object.getPrototypeOf(obj2));
        const obj3 = {
            name:"哆啦A梦",
            age:1000
        }
        console.log(obj3,'obj3')
        // 返回可迭代的属性的键值对数组
        console.log(Object.keys(obj3),'obj3')
        // 返回可迭代的值的键值对数组
        console.log(Object.values(obj3),'obj3')
        // 返回可迭代的对象的键值对数组
        console.log(Object.entries(obj3),'obj3')
        // 返回当前传入对象的自身属性
        console.log(Object.getOwnPropertyDescriptors(obj3),'obj3')
        // Object.create(当前对象的原型 一般为null,创建的对象) 创建一个新对象
        const obj4 = Object.create(null,{
            name:{
                value:"喜羊羊",
                enumerable:true,
                configurable:true,
                writable:true
            },
            friends:{
                value:["美羊羊","懒羊羊"],
                enumerable:true,
                configurable:true,
                writable:true
            }
        })
        console.log(obj4,'obj4')
        console.log(Object.getOwnPropertyDescriptors(obj4),'obj4')
    </script>
</body>
</html>