标签：ES6 school console log NaN Object 扩展 const ES11
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>对象方法扩展</title>
</head>
<body>
<script>
//1. Object.is 判断两个值是否完全相等
// console.log(Object.is(120, 120));// ===
// console.log(Object.is(NaN, NaN));// ===
// console.log(NaN === NaN);// ===
//2. Object.assign 对象的合并
// const config1 = {
// host: 'localhost',
// port: 3306,
// name: 'root',
// pass: 'root',
// test: 'test'
// };
// const config2 = {
// host: 'http://atguigu.com',
// port: 33060,
// name: 'atguigu.com',
// pass: 'iloveyou',
// test2: 'test2'
// }
// console.log(Object.assign(config1, config2));
//3. Object.setPrototypeOf 设置原型对象 Object.getPrototypeof
const school = {
name: '尚硅谷'
}
const cities = {
xiaoqu: ['北京','上海','深圳']
}
Object.setPrototypeOf(school, cities);
console.log(Object.getPrototypeOf(school));
console.log(school);
</script>
</body>
</html>
标签：ES6,
school,
console,
log,
NaN,
Object,
扩展,
const,
ES11
From： https://www.cnblogs.com/chuixulvcao/p/17196622.html