js数组循环创建问题求解

Question

已知以下数组：arr=[['2018-01-01','aaa',12.11],['2018-02-01','bbb',12.99],['2018-09-01','aaa',1.11],['2018-01-01','ccc',152.11]]；brr=['date','type','val']；如何构建以下数组：crr=[{'date':'2018-01-01','type':'aaa','val':12.11},{...},{...},{...}];菜鸟，对数组理解不深，可否分别使用JavaScript、jQuery两种方式演示；

Answer 1

 var arr=[['2018-01-01','aaa',12.11],['2018-02-01','bbb',12.99],['2018-09-01','aaa',1.11],['2018-01-01','ccc',152.11]];
        var brr=['date','type','val'];
        function js(){
            var crr = new Array();
            for (var i = 0; i < arr.length;  i++){
                var a = new Array();
                a[brr[0]]= arr[i][0];
                a[brr[1]]= arr[i][1];
                a[brr[2]]= arr[i][2];
                crr.push(a);
            }
        }
        function jq(){
            var crr = new Array();
            $.each(arr, function(i, e){
                var a = new Array();
                a[brr[0]]= e[0];
                a[brr[1]]= e[1];
                a[brr[2]]= e[2];
                crr.push(a);
            });
        }
        js();
        jq();