js的数组按日期排序

升序排序

    //升序排序    arr.sort(function(a, b) {        if (a.doneTime < b.doneTime ) {            return -1;        } else if (a.doneTime > b.doneTime ) {            return 1;        } else {            if (a.doneTime < b.doneTime ) {                return 1;            } else if (a.doneTime > b.doneTime ) {                return -1;            }            return 0;        }    });

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参考：
http://blog.csdn.net/hfhwfw/article/details/17933123