2. let dataList =[{"showOrder":"2","name":"李四","age":"18"},{"showOrder":"4","name":"马六","age":"30"},{"showOrder":"3","name":"王五","age":"24"},{"showOrder":"1","name":"张三","age":"15"}]
    4. dataList.sort(this.compare)
    7. compare(obj1, obj2) {
    8.     let val1 = obj1.showOrder;
    9.     let val2 = obj2.showOrder;
    10.     if(val1 < val2) {
    11.         return -1;
    12.     }elseif(val1 > val2) {
    13.         return 1;
    14.     }else {
    15.         return 0;
    16.     }
    17. },