JavaScript 遍历多维数组

基于ECMAScript5提供遍历数组的forEach方法仅能遍历一维数组，没有提供循环遍历多维数组的方法，所以根据白鹤翔老师的讲解，实现如下遍历多维数组的each方法，以此遍历多维数组。

 

<script type="text/javascript" charset="UTF-8">
//遍历多维数组方法实现
    Array.prototype.each = function (fn) {
try {
this.i = 0;
if (this.length > this.i && fn.constructor == Function) {
while (this.length > this.i) {
var elem = this[this.i];
if (elem.constructor == Array) {
                        elem.each(fn);
                    } else {
                        fn.call(elem, elem);
                    }
this.i++;
                }
            }
        } catch (e) {
            console.log("error happened in printing multipul-dimention array. error message : " + e);
throw e;
        }
return this;
    };

var array = ["中国", "Charles", 7526, ["A", "B", "C"], ["D", ["E", "F"], "G"], {
"gander": "Male"
    }];
//遍历多维数组
    array.each(function (item) {
        alert(item);
    });

//遍历一维数组
    array.forEach(function (item, index, arr) {
        alert(item);
    });
</script>