活动倒计时，可同步服务器时间，倒计时格式随意设置
使用说明
/*
#活动倒计时，可同步服务器时间
startTime:起始时间
endTime:结束时间
format_str：字符模板
speed：倒计时执行速度
callback:倒计时结束回调
$('.xxx').countDown_str({
startTime:'2018-09-28 11:09:00',
endTime: '2018-09-29 11:09:00',
format_str: '<span class="dd">{d}</span><span class="hh">{h}</span><span class="mm">{m}</span><span class="ss">{s}</span><span class="hs">{hs}</span>'
});
//字符模板详细说明
{d}天数
{h}小时
{m}分钟
{s}秒
{hs}毫秒
*/
插件代码
$.fn.countDown_str = function (options) {
var defaults = {
startTime: '2018-09-28 11:09:00',
endTime: '2018-09-29 11:09:00',
speed: 1000,
format_str: '<span class="dd">{d}</span><span class="hh">{h}</span><span class="mm">{m}</span><span class="ss">{s}</span><span class="hs">{hs}</span>',
callback: function () {
}
}
var opt = $.extend({}, defaults, options);
return this.each(function () {
var that = this,
timer = '';
function init() {
var nowTimeStamp = new Date().getTime();//服务器的开始时间
var nowTimeStamp_server = new Date(opt.startTime).getTime();
this.totalTime = nowTimeStamp - nowTimeStamp_server;//服务器与本地时间差
}
init.prototype.format = function (str, args) {
var result = str;
if (arguments.length > 0) {
if (arguments.length == 2 && typeof (args) == "object") {
for (var key in args) {
if (args[key] != undefined) {
var reg = new RegExp("({" + key + "})", "g");
result = result.replace(reg, args[key]);
}
}
}
}
return result;
};
init.prototype.outputTime = function () {
var date = this.date,
endTime = opt.endTime,
format_str = opt.format_str;
var nowTimeStamp = new Date().getTime();
var endTimeStamp = new Date(endTime).getTime();
var surplusTime = endTimeStamp - nowTimeStamp + this.totalTime;
var d = parseInt((surplusTime / (1000 * 60 * 60 * 24)));
var _d = d < 10 ? '0' + d : d;
var h = parseInt((surplusTime % (1000 * 60 * 60 * 24)) / (1000 * 60 * 60)); //时
var _h = h < 10 ? '0' + h : h;
var m = parseInt((surplusTime % (1000 * 60 * 60)) / (1000 * 60)); //分
var _m = m < 10 ? '0' + m : m;
var s = ((surplusTime % (1000 * 60)) / 1000).toString(); //秒
var s1 = s.toString().split('.')[0]; //秒
var _s1 = s1 < 10 ? '0' + s1 : s1;
var _s3 = (s - s1).toFixed(3).toString().substring(2);
if (surplusTime > 0) {
format_str = init.format(format_str, {
d: _d,
h: _h,
m: _m,
s: _s1,
hs: _s3
});
} else {
format_str = init.format(format_str, {
d: '00',
h: '00',
m: '00',
s: '00',
hs: '000'
});
clearInterval(timer);
//定时器结束灰调
if (typeof opt.callback == 'function') {
opt.callback();
}
}
$(that).html(format_str);
}
var init = new init();
init.outputTime();
timer = setInterval(function () {
init.outputTime();
}, opt.speed);
});
}