1 <!DOCTYPE html>
2 <html lang="en">
3 <head>
4 <meta charset="UTF-8">
5 <title>javascript数组去重算法-----3</title>
6 </head>
7 <body>
8 <script>
9 var arrDemo = new Array();
10
11 arrDemo[0] = 10;
12 arrDemo[1] = 50;
13 arrDemo[2] = 51;
14 arrDemo[3] = 100;
15
16 arrDemo.sort(); //调用sort方法后，数组本身会被改变，即影响原数组
17
18 console.log(arrDemo);//10,100,50,51 默认情况下sort方法是按ascii字母顺序排序的，而非我们认为是按数字大小排序
19
20 arrDemo.sort(function(a,b){return a>b?1:-1});//从小到大排序
21
22 console.log(arrDemo);//10,50,51,100
23
24 arrDemo.sort(function(a,b){return a<b?1:-1});//从大到小排序
25
26 console.log(arrDemo);
27 </script>
28 </body>
29 </html>
时间： 2024-10-26 15:56:06