javascript数组去重算法-----2

 1 <!DOCTYPE html>
 2 <html lang="en">
 3 <head>
 4     <meta charset="UTF-8">
 5     <title>javascript数组去重算法-----2</title>
 6 </head>
 7 <body>
 8     <script>
 9     var arr = [1,1,2,2,3,2,2,3,3,1,1,4,4,5,6];
10     function unique(array){
11         var n = [array[0]];
12         for (var i = 1; i < array.length; i++) {
13             if (array.indexOf(array[i])==i) {
14                 n.push(array[i])
15             }
16         }
17         return n
18     }
19 var cc    =unique(arr);
20 console.log(cc)
21 //利用indexOf()与第一种的区别
22     </script>
23 </body>
24 </html>
坚持下去就能成功