我需要帮助javascript中的倒数计时器。我在PHPJabbers中找到了以下代码。这段代码工作正常,但是当我重新加载页面时,时间会回到初始时间。即使我加载页面,我也想保留时间。如果秒== 0我还想在里面添加PHP函数。我不确定它是否可行。提前致谢
<span id="countdown" class="timer"></span>
<script>
var seconds = 60;
function secondPassed() {
var minutes = Math.round((seconds - 30)/60);
var remainingSeconds = seconds % 60;
if (remainingSeconds < 10) {
remainingSeconds = "0" + remainingSeconds;
}
document.getElementById('countdown').innerHTML = minutes + ":" + remainingSeconds;
if (seconds == 0) {
clearInterval(countdownTimer);
document.getElementById('countdown').innerHTML = "Buzz Buzz";
} else {
seconds--;
}
}
var countdownTimer = setInterval('secondPassed()', 1000);
</script>
答案 0 :(得分:3)
检查一下,(使用cookies实现)
function setCookie(cname,cvalue,exdays)
{
var d = new Date();
d.setTime(d.getTime()+(exdays*24*60*60*1000));
var expires = "expires="+d.toGMTString();
document.cookie = cname + "=" + cvalue + "; " + expires;
}
function getCookie(cname)
{
var name = cname + "=";
var ca = document.cookie.split(';');
for(var i=0; i<ca.length; i++)
{
var c = ca[i].trim();
if (c.indexOf(name)==0) return c.substring(name.length,c.length);
}
return "";
}
//check existing cookie
cook=getCookie("my_cookie");
if(cook==""){
//cookie not found, so set seconds=60
var seconds = 60;
}else{
seconds = cook;
console.log(cook);
}
function secondPassed() {
var minutes = Math.round((seconds - 30)/60);
var remainingSeconds = seconds % 60;
if (remainingSeconds < 10) {
remainingSeconds = "0" + remainingSeconds;
}
//store seconds to cookie
setCookie("my_cookie",seconds,5); //here 5 is expiry days
document.getElementById('countdown').innerHTML = minutes + ":" + remainingSeconds;
if (seconds == 0) {
clearInterval(countdownTimer);
document.getElementById('countdown').innerHTML = "Buzz Buzz";
} else {
seconds--;
}
}
var countdownTimer = setInterval(secondPassed, 1000);
工作jsFiddle
答案 1 :(得分:0)
bhavesh的精彩解决方案..如果有人想要显示天,小时,分钟,秒,那么他们可以参考此代码。
Reverse timer from javascript:
var target_date = new Date('Aug 01 2014 20:47:00').getTime();
var days, hours, minutes, seconds;
var countdown = document.getElementById('timeremaining');
var countdownTimer = setInterval(function () {
var current_date = new Date().getTime();
var seconds_left = (target_date - current_date) / 1000;
days = parseInt(seconds_left / 86400);
seconds_left = seconds_left % 86400;
hours = parseInt(seconds_left / 3600);
seconds_left = seconds_left % 3600;
minutes = parseInt(seconds_left / 60);
seconds = parseInt(seconds_left % 60);
if(days <= 0 && hours <= 0 && minutes <= 0 && seconds <= 0 )
{
document.getElementById('timeremaining').innerHTML = '';
clearInterval(countdownTimer);
}
else
{
if(days>0)
{
days= days+'d,';
}
else
{
days='';
}
countdown.innerHTML ='( ' + days + checkTime(hours) + ':'+ checkTime(minutes) + ':' + checkTime(seconds) +' remaining)';
}
}, 1000);
function checkTime(i) {
if (i < 10) {i = '0' + i};
return i;
}