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@@ -0,0 +1,75 @@
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+<!DOCTYPE html>
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+<html lang="en">
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+
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+<head>
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+ <meta charset="UTF-8">
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+ <meta http-equiv="X-UA-Compatible" content="IE=edge">
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+ <meta name="viewport" content="width=device-width, initial-scale=1.0">
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+ <title>Document</title>
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+</head>
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+
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+<body>
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+ <script>
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+ /* var obj = {
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+ name: 'zs',
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+ age: 18,
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+ eat: function () {
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+ console.log('eat')
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+ }
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+ }
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+ var obj1 = {
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+ name: 'lisi',
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+ school: 'xiwangxiaoxue'
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+ } */
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+ /* 合并对象 用obj1区覆盖obj */
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+ // var obj2 = Object.assign(obj,obj1)
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+ // console.log(obj2)
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+
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+ /* 合并对象 */
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+ // var obj3 = {...obj1,...obj}
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+ // console.log(obj3)
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+
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+
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+ /* Object.setPrototypeOf 设置原型对象 */
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+ /* Object.getPrototypeOf 获取原型对象 */
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+ /* let obj1 = {
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+ name: 'harbin'
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+ }
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+ let city = {
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+ area: ['shenyang','dalian','changchun']
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+ }
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+ console.log(Object.setPrototypeOf(obj1,city))
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+ console.log(Object.getPrototypeOf(obj1)) */
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+
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+ /* 判断是否相等 */
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+ /* console.log(Object.is(1,-1))
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+ console.log(Object.is(-0,0))
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+ console.log(Object.is(NaN,NaN)) */
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+ // console.log(0 === -0)
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+
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+ /* 返回一个对象的所有自身属性的描述对象 */
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+ /* const obj = {
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+ a: 1
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+ }
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+ console.log(Object.getOwnPropertyDescriptors(obj)) */
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+
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+ /* const obj = {
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+ a: 1,
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+ b: 2
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+ }
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+ console.log(Object.values(obj))
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+ console.log(Object.entries(obj)) */
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+
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+ /* 检查一个对象自身是否拥有给定的属性 不考虑原型链 */
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+ const obj = Object.create({
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+ a: 1
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+ })
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+ obj.b = 2
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+ console.log(Object.hasOwn(obj,'a'))
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+ console.log(Object.hasOwn(obj,'b'))
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+
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+
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+ </script>
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+</body>
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+
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+</html>
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zsydgithub