只是想知道,如果有任何方式或代码,可以为每天6小时设置倒计时器吗?
例如,我想在此时间开始倒计时(换句话说,就像每6小时一样): 9 am-3pm 3 pm-9pm 9 pm-3am 3 am-9am?
我看了整个网站,找不到那样的倒数计时器..
最好是HTML和javascript / jquery。
答案 0 :(得分:2)
var timer = {
started: false,
timestamp: 0
},
trigger = 15; //3pm
function timerInit(){
var hour = new Date().getHours();
if(!started && hour === trigger){ //When it's 3pm, the timer will start
startTimer(); //└─ rewrite the conditional statement
// as needed
//do whatever you want here
timer.timestamp = +new Date();
timer.started = true; //Indicates the timer has been started
}
requestAnimationFrame(timerInit); //setTimeout is not efficient
}
requestAnimationFrame(timerInit);
//This is for when the timer has ended.
function timerEnded(){
timer.started = false;
}
function startTimer(){
var d = new Date();
timePassed = new Date(timer.timestamp + 1000*60*60*6 - d);
var remaining = { //Calculate time difference
hour: timePassed.getHours(), // using timestamps
minute: timePassed.getMinutes(),
second: timePassed.getSeconds()
}
console.log(remaining);
if(timePassed > 0){
setTimeout(startTimer, 500); //Countdown
}else{
timerEnded(); //Ended
}
}
答案 1 :(得分:-2)
您可以使用javascript的原生setInterval
方法
E.g:
var timer = setInterval(myfunction, 21600) // 21600 seconds == 6 hours