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模板字面量与标签函数
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模板字面量与标签函数

  1. <!DOCTYPE html>
  2. <html lang="en">
  3. <head>
  4.     <meta charset="UTF-8">
  5.     <meta http-equiv="X-UA-Compatible" content="IE=edge">
  6.     <meta name="viewport" content="width=device-width, initial-scale=1.0">
  7.     <title>Document</title>
  8. </head>
  9. <body>
  10.     <script>
  11.         // 作业内容：
  12.         // 1. 实例演示模板字面量与标签函数; 
  13.         // 2. 实例演示解构赋值与对象字面量的简化方式
  14.         let username = 'admin';
  15.         // ` ` 模板字面量   
  16.         let str = `
  17.             <a>Hello</a>
  18.             ${username}  
  19.         `;
  20.         console.log(str);
  22.         // 标签函数
  23.         let show = (str,...arg) => {
  24.              console.log(arg[0]+arg[1]+arg[2])
  25.             // return a+b+c;
  26.         };
  28.         let a = 10;
  29.         let b = 20;
  30.         let c = 70;
  31.         show`${a} + ${b} + ${c} =`;
  33.         // 解构赋值
  34.         let [e,f,...g] = [10,20,30,40,50]; 
  35.         console.log(e,f,g);
  37.         console.log([a,b] = [b,a]) //解构实现交换，无需借助第三个变量即可实现
  39.         // 对象解构，字面量
  40.         let {id,name} = {id:1000,name:"小王"};
  41.         console.log(id,name);
  43.         let person = {
  44.             id: "张三",
  45.             name:"zhangsan@qq.com",
  46.             getInfo:function(){
  47.                 return `${this.name}:(${this.email})`; 
  48.             }
  49.         };
  50.         console.log(person);
  52.          let user = {
  53.             id,
  54.             name,
  55.             //可以使用箭头简写
  56.             // getInfo(){
  57.             //     return `${this.name}:(${this.email})`; 
  58.             // }
  59.             getInfo : () => `${this.name}:(${this.email})`,
  60.         };
  61.         console.log(user);
  62.     </script>
  63. </body>
  64. </html>
Correcting teacher：天蓬老师天蓬老师

Correction status：qualified

Teacher's comments：
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