菁英数字科技（猩码）-猩码学苑-专注软件开发人才菁英教育

标题: 2022-12-29 王嘉乐 [打印本页]

作者: yousay！ 时间: 2023-1-5 18:42
标题: 2022-12-29 王嘉乐
<!DOCTYPE html>
<html lang="en">

<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
</head>

<body>
<script>
      // ES6新增的
      // let 函数名 = (形参) => {
      //    js代码
      // }

      var sum1 = function (a, b) {
         return a + b
      }

      /* const sum2 = (a, b) => {
         return a + b
      } */

      const sum2 = (a, b) => a + b;

      // console.log(sum1(1, 2));
      // console.log(sum2(1, 2));

      var add1 = function (n) {
         return n + 2;
      }

      // const add2 = (n) => {
      //    return n + 2;
      // }

      const add2 = n => n + 2;

      // console.log(add1(10));
      // console.log(add2(10));

      var arr = [1, 2, 3, 4];
      var newArr1 = arr.map(function (v, i) {
         // console.log(v, i);
         return v * 100;
      });

      // const newArr2 = arr.map((v, i) => {
      //    // console.log(v, i);
      //    return v * 100;
      // });
      const newArr2 = arr.map(v => v * 100);

      // console.log('newArr1', newArr1);
      // console.log('newArr2', newArr2);

      // setTimeout(function () {
      //    console.log(666);
      // }, 1000);

      setTimeout(() => console.log(8888), 2000);
</script>
</body>

</html>

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