1. <!DOCTYPE html>
    2. <html>
    4.     <head>
    5.         <meta charset="UTF-8">
    6.         <title></title>
    7.     </head>
    8.     <script>
    9.         function unique(arr) {
    10.             var newArr = [];
    11.             for(var i = 0; i < arr.length; i++) {
    12.                 //如果新数组种查询不到旧数组的元素，就存储到新数组种
    13.                 if(newArr.indexOf(arr[i]) == -1) {
    14.                     newArr.push(arr[i]);
    15.                 }
    16.             }
    17.             return newArr;
    18.         }
    19.         var demo = unique([1, 2, 3, 41, 2, 3, 1, 2, 5, 6, 6]);
    20.         console.log(demo);
    21.     </script>
    22.     <body>
    23.     </body>
    24. </html>