scyf/back/assets/libs/leftTime/leftTime.js

(function ($, app) {
    Date.prototype.format = function (format) {
        var o = {
            "M+": this.getMonth() + 1, //month
            "d+": this.getDate(), //day
            "h+": this.getHours(), //hour
            "m+": this.getMinutes(), //minute
            "s+": this.getSeconds(), //second
            "q+": Math.floor((this.getMonth() + 3) / 3), //quarter
            "S": this.getMilliseconds() //millisecond
        }
        if (/(y+)/.test(format)) format = format.replace(RegExp.$1,
            (this.getFullYear() + "").substr(4 - RegExp.$1.length));
        for (var k in o)
            if (new RegExp("(" + k + ")").test(format))
                format = format.replace(RegExp.$1,
                    RegExp.$1.length == 1 ? o[k] :
                        ("00" + o[k]).substr(("" + o[k]).length));
        return format;
    };
    app.leftTime = function (setdate, callback, isCheckTime) {
        var timer = this.timer;
        if (!isCheckTime && isCheckTime != false) {
            isCheckTime = true;
        }
        ;
        var opts = {};
        opts.count = 0;
        //定义变量 d,h,m,s保存倒计时的时间
        var d = 0,
            h = 0,
            m = 0,
            s = 0,
            setCount = 0,
            setCount2 = 0,
            stepCheck = 0,
            status = false;
        if (typeof (setdate) === "object") {
            if (!setdate.init && setdate.init != true) {
                setdate.init = false;
            }
            ;
            var countTime = 0,
                newDateTime,
                setDayNo = 0;
            if (setdate.setday != 0 || setdate.setday != "0") {
                setDayNo = parseInt(setdate.setday) * 86400000;
            }
            if (!setdate.nowdate || setdate.nowdate == null || setdate.nowdate == undefined || setdate.nowdate == "undefined") {
                setdate.nowdate = new Date().getTime();
                newDateTime = new Date();
            } else {
                countTime = (new Date().getTime()) - parseInt(setdate.nowdate);
                newDateTime = new Date(setdate.nowdate);
            }
            var newSeverDateTime = new Date(parseInt(setdate.nowdate) + setDayNo);
            var severStart = 0, severEnd = 0;
            if ((setdate.startdate != 0 && setdate.startdate != "0") && !setdate.init) {
                if (typeof (setdate.startdate) === "string") {
                    if (checkDateTime(setdate.startdate)) {
                        severStart = new Date((setdate.startdate).replace(/-/g, "/")).getTime();
                    } else {
                        if (checkIsTime(setdate.startdate)) {
                            severStart = new Date(newSeverDateTime.format("yyyy/MM/dd") + " " + setdate.startdate).getTime();
                        }
                    }
                    ;
                } else if (typeof (setdate.startdate) === "number") {
                    severStart = setdate.startdate;
                }
            }
            if (setdate.enddate != 0 || setdate.enddate != "0") {
                if (typeof (setdate.enddate) === "string") {
                    if (checkDateTime(setdate.enddate)) {
                        severEnd = new Date((setdate.enddate).replace(/-/g, "/")).getTime();
                    } else {
                        if (checkIsTime(setdate.enddate)) {
                            severEnd = new Date(newSeverDateTime.format("yyyy/MM/dd") + " " + setdate.enddate).getTime();
                        }
                    }
                    ;
                } else if (typeof (setdate.enddate) === "number") {
                    severStart = setdate.enddate;
                }
            }
            ;
            var currDateTime = newDateTime.getTime();
        }
        ;

        function checkDateTime(str) {
            if (str.indexOf("-") != -1 || str.indexOf("/") != -1) {
                return true;
            } else {
                return false;
            }
        }

        function checkIsTime(str) {
            var reg = /^(20|21|22|23|[0-1]\d):[0-5]\d$/;
            if (reg.test($.trim(str))) {
                return true;
            } else {
                return false;
            }
        }

        function checkTime(i) {
            if (i < 10) {
                if (isCheckTime) {
                    i = "0" + i;
                }
            }
            return i;
        }

        function leftTimeExeFn() {
            if (typeof (setdate) === "string" || typeof (setdate) === "number") {
                //获取当前时间
                var startDate = new Date();
                var nowTime = startDate.getTime();
                //设置截止时间
                var endTime = 0;
                var leftTimeCount = 0;
                if (typeof (setdate) === "string" || setdate.toString().length >= 12) {
                    setdate = typeof (setdate) === "string" && checkDateTime(setdate) == true ? setdate.replace(/-/g, "/") : setdate;
                    var endDate = new Date(setdate);
                    endTime = endDate.getTime();
                    leftTimeCount = endTime - nowTime;
                } else {
                    endTime = setdate - opts.count;
                    leftTimeCount = endTime * 1000;
                    opts.count++;
                }
                if (leftTimeCount > 0) {
                    d = Math.floor(leftTimeCount / 1000 / 60 / 60 / 24);
                    h = Math.floor(leftTimeCount / 1000 / 60 / 60 % 24);
                    m = Math.floor(leftTimeCount / 1000 / 60 % 60);
                    s = Math.floor(leftTimeCount / 1000 % 60);
                    status = true;
                } else {
                    window.clearInterval(timer);
                    d = 0;
                    h = 0;
                    m = 0;
                    s = 0;
                    status = false;
                }
            } else if (typeof (setdate) === "object") {
                var nowTime = new Date().getTime() + (countTime > 0 ? countTime * -1 : Math.abs(countTime));
                var endTime = 0;
                if (currDateTime < severStart) {
                    endTime = severStart;
                    stepCheck = 1;
                } else if (currDateTime >= severStart && currDateTime < severEnd) {
                    endTime = severEnd;
                    stepCheck = 2;
                } else if (currDateTime >= severEnd) {
                    stepCheck = 3;
                }
                //时间差
                var countEnd = endTime - nowTime;
                if (countEnd > 0) {
                    d = Math.floor(countEnd / 1000 / 60 / 60 / 24);
                    h = Math.floor(countEnd / 1000 / 60 / 60 % 24);
                    m = Math.floor(countEnd / 1000 / 60 % 60);
                    s = Math.floor(countEnd / 1000 % 60);
                    status = true;
                } else {
                    window.clearInterval(timer);
                    d = 0;
                    h = 0;
                    m = 0;
                    s = 0;
                    status = false;
                }
            }
            var dataTime = {
                "d": checkTime(d),
                "h": checkTime(h),
                "m": checkTime(m),
                "s": checkTime(s)
            };
            dataTime.status = status;
            dataTime.step = stepCheck;
            if (callback && typeof (callback) === "function") {
                return callback(dataTime);
            }
        }

        leftTimeExeFn();
        timer = setInterval(leftTimeExeFn, 1000);
        if (timer != "undefined" || timer != null || timer != undefined) {
            return timer;
        }
    };
    $.extend(app);
})(jQuery || zepto, {});