JQuery 日期格式化

function setDateValueDefault() {

    var fromDay = new Date();

    fromDay.setDate(fromDay.getDate() - 30);

    var endDay = new Date();

    var fromDayStr = fromDay.Format("yyyy-MM-dd hh:mm:ss");

    var toDayStr = endDay.Format("yyyy-MM-dd hh:mm:ss");

    $("#dateFrom").val(fromDayStr);

    $("#dateTo").val(toDayStr);

}

Date.prototype.Format = function (fmt) {

    var o = {

        "M+": this.getMonth() + 1,

        "d+": this.getDate(),

        "h+": this.getHours(),

        "m+": this.getMinutes(),

        "s+": this.getSeconds(),

        "q+": Math.floor((this.getMonth() + 3) / 3),

        "S": this.getMilliseconds()

    };

    if (/(y+)/.test(fmt))

        fmt = fmt.replace(RegExp.$1, (this.getFullYear() + "").substr(4 - RegExp.$1.length));

    for (var k in o)

        if (new RegExp("(" + k + ")").test(fmt))

            fmt = fmt.replace(RegExp.$1, (RegExp.$1.length === 1) ? (o[k]) : (("00" + o[k]).substr(("" + o[k]).length)));

    return fmt;

};