wxTimer.js
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var wxTimer = function (initObj){
initObj = initObj || {};
this.beginTime = initObj.beginTime || "00:00:00"; //开始时间
this.interval = initObj.interval || 0; //间隔时间
this.complete = initObj.complete; //结束任务
this.intervalFn = initObj.intervalFn; //间隔任务
this.name = initObj.name; //当前计时器在计时器数组对象中的名字
this.intervarID; //计时ID
this.endTime; //结束时间
this.endSystemTime; //结束的系统时间
}
wxTimer.prototype = {
//开始
start:function(self){
this.endTime = new Date("1970/01/01 "+this.beginTime).getTime();//1970年1月1日的00:00:00的字符串日期
this.endSystemTime = new Date(Date.now() + this.endTime);
var that = this;
//开始倒计时
var count = 0;//这个count在这里应该是表示s数,js中获得时间是ms,所以下面*1000都换成ms
function begin(){
var tmpTime = new Date(that.endTime - 1000 * count++);
//把2011年1月1日日 00:00:00换成数字型,这样就可以直接1s,1s的减,就变成了倒计时,为了看的更明确,又用new date把字符串换回来了
var tmpTimeStr = tmpTime.toString().substr(16,8);//去掉前面的年月日就剩时分秒了
var wxTimerSecond = (tmpTime.getTime() - new Date("1970/01/01 00:00:00").getTime()) / 1000;
var wxTimerList = self.data.wxTimerList;
//更新计时器数组
wxTimerList[that.name] = {
wxTimer:tmpTimeStr,
wxTimerSecond:wxTimerSecond,
}
self.setData({
wxTimer:tmpTimeStr,
wxTimerSecond:wxTimerSecond,
wxTimerList:wxTimerList
});
//时间间隔执行函数
if( 0 == (count-1) % that.interval && that.intervalFn){
that.intervalFn();
}
//结束执行函数
if(wxTimerSecond <= 0){
if(that.complete){
that.complete();
}
that.stop();
}
}
begin();
this.intervarID = setInterval(begin,1000);
},
//结束
stop:function(){
clearInterval(this.intervarID);
},
//校准
calibration:function(){
this.endTime = this.endSystemTime - Date.now();
}
}
module.exports = wxTimer;