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对于模板字面量与标签函数、解构赋值于对象字面量的简化方式的理解
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模板字面量与标签函数

模板字面量在js中可以理解为增强版的字符串,它用反引号(`)标识,类似php中的双引号。能够解析里面的变量。

代码如下:

  1. <script>
  2. let a = "hello",
  3. b = "doctor";
  4. let str = `${a} ${b}`;
  5. console.log(str);
  6. </script>

解构赋值

解构赋值是为了方便提取对象或者数组中的值,不用从数组、对象中一个个提取出来。

代码如下:

  1. <script>
  2. let arr1 = ["a", "b", "c", "d"];
  3. let [e, f, g, h] = arr1;
  4. console.table([e, f, g, h]);
  5. </script>

对象字面量的简化方式

对象字面量中的属性值,如果引用了相同作用域中的”同名变量”,则可以省去不写

代码如下:

  1. <script>
  2. let bird = {
  3. move: "move",
  4. color: "color",
  5. };
  6. let { move, color } = bird;
  7. let butterfly = {
  8. move,
  9. color,
  10. };
  11. console.log(butterfly);
  12. </script>
Correcting teacher:PHPzPHPz

Correction status:qualified

Teacher's comments:
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