typescript数组排序之自定义优先排序

typescript数组排序之自定义优先排序

场景：

var s1 = [a1,a2],

var s2 = [a4,a2,a1,a3]

我想通过是s1的顺序动态的改变s2的顺序

结果：

s2 = [a1,a2,a3,a4]或者s2 = [a1,a2,a4,a3]

    private OrderSort(s2:Array<any>) {
        var s1 =[2,1,8,9,3];
        var curr, index, result = [];
        for (var i = 0, len = s1.length; i < len; i++) {
            curr = s1[i];
            index = s2.indexOf(curr);
            if (index > -1) {
                s2.splice(index, 1);
                result.push(curr);
            }
        }
        return result.concat(s2);
    }