JavaScript倒计时计时器未启动
我尝试在我的页面上使用这个JavaScript倒计时,但计时器无法启动。 我做错了什么JavaScript倒计时计时器未启动,javascript,Javascript,我尝试在我的页面上使用这个JavaScript倒计时,但计时器无法启动。 我做错了什么 var CountdownID = null; var start_msecond = 9; var start_sec = 120; window.onload = countDown(start_msecond, start_sec, "timerID"); function countDown(pmsecond, psecond, timerID) { var msecond = ((pmsecon
var CountdownID = null;
var start_msecond = 9;
var start_sec = 120;
window.onload = countDown(start_msecond, start_sec, "timerID");
function countDown(pmsecond, psecond, timerID) {
var msecond = ((pmsecond < 1) ? "" : "") + pmsecond;
var second = ((psecond < 9) ? "0": "") + psecond;
document.getElementById(timerID).innerHTML = second + "." + msecond;
if (pmsecond == 0 && (psecond-1) < 0) { //Recurse timer
clearTimeout(CountdownID);
var command = "countDown("+start_msecond+", "+start_sec+", '"+timerID+"')";
CountdownID = window.setTimeout(command, 100);
alert("Time is Up! Enter your PIN now to subscribe!");
}
else { //Decrease time by one second
--pmsecond;
if (pmsecond == 0) {
pmsecond=start_msecond;
--psecond;
}
if (psecond == 0) {
psecond=start_sec;
}
var command = "countDown("+pmsecond+", "+psecond+", '"+timerID+"')";
CountdownID = window.setTimeout(command, 100);
}
}
<span style="color:red" name="timerID" id="timerID">91.6</span>
var CountdownID=null;
var start_msecond=9;
var启动时间=120秒;
window.onload=倒计时(开始秒,开始秒,“timerID”);
函数倒计时(pmsecond、pssecond、timerID){
var msecond=((pmsecond<1)?“”:“”)+pmsecond;
var second=((每秒<9)?“0”:“)+pssecond;
document.getElementById(timerID).innerHTML=second+“+msecond;
如果(pmsecond==0&&(pssecond-1)<0{//递归计时器
clearTimeout(倒计时ID);
var command=“倒计时(“+start_msecond+”、“+start_sec+”、“+timerID+”)”;
CountdownID=window.setTimeout(命令,100);
警报(“时间到了!现在输入您的PIN以订阅!”);
}
否则{//将时间缩短一秒
--pms;
如果(pmsecond==0){
pmsecond=开始秒;
--秒;
}
如果(秒==0){
psecond=开始秒;
}
var command=“倒计时(“+pmsecond+”、“+pssecond+”、“+timerID+”)”;
CountdownID=window.setTimeout(命令,100);
}
}
91.6
以下是您首先需要做的事情
window.onload = countDown(start_msecond, start_sec, "timerID");
应该是
window.onload = function () {
countDown(start_msecond, start_sec, "timerID");
}
此外,还应避免在setTimeout函数中使用字符串:
CountdownID = window.setTimeout(function () {
countDown(pmsecond,psecond,"timerID");
}, 100);
请参见此处计时器正在工作。但是为什么它会重新启动,当它达到0时不显示警报框?@tylereff:switch
--pmsecond代码>至pmsecond--代码>我认为这可能是因为您在发出警报之前设置了一个新计时器。尝试删除行CountdownID=window.setTimeout(命令,100)代码>在您的第一个条件下,或将警报移到它之前