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>删去数组中指定元素，组成新数组</title>
8 </head>
9 <body>
10
11 </body>
12 <script>
13 var arr = [1,2,3,4,2,5,6,2,7,2];//设定一个数组
14 var brr = [];//新生成的数组
15 var a = b = 0;
16 for (const i in arr) {//遍历
17 if (arr[i]==2) {//判断数组arr中下标为i的元素是否为2
18 delete arr[i]; //如果是删除
19 }else{
20 a = arr[i];
21 brr[b] = a;//如果不是插入新数组
22 b++;
23 }
24 }
25 for (const i in brr) {
26 document.write(brr[i]);//遍历输出
27 }
28 </script>
29 </html>