js数组去重

/js小方法记录

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