1 var result = new Array();//去重后结果数组 2 var arr=[1,2,3,4,5,1,2,3,10];//需去重的数组 3     var hash = {}; 4     for (var i = 0, elem; (elem=arr[i])!= null; i++) { 5         if (!hash[elem]) { 6             result.push(elem); 7             hash[elem] = true; 8         } 9     }10 console.info(result);11 VM1823:11 [1, 2, 3, 4, 5, 10]