简体   繁体   中英

How to make Javascript Count Up timer work

I am trying to implement a simple count up timer using Javascript and show the timer in the HTML page. This is my code:

var minutesLabel = document.getElementById("minutes");
var secondsLabel = document.getElementById("seconds");
var totalSeconds = 0;
setInterval(setTime, 1000);

function setTime()
{
    ++totalSeconds;
    secondsLabel.innerHTML = pad(totalSeconds%60);
    minutesLabel.innerHTML = pad(parseInt(totalSeconds/60));
}

function pad(val)
{
    var valString = val + "";
    if(valString.length < 2)
    {
        return "0" + valString;
    }
    else
    {
        return valString;
    }
}

HTML:

<label id="minutes">00</label>
    <label id="colon">:</label>
    <label id="seconds">00</label>

But the timer is not working in the HTML. It stays at 00:00

Make sure the script is at the bottom on the body tag

The code you posted works exactly as you describe.

Check this fiddle , I just copy pasted it.

.

The code you mentioned is working perfectly fine in the snippets.

The technical post webpages of this site follow the CC BY-SA 4.0 protocol. If you need to reprint, please indicate the site URL or the original address.Any question please contact:yoyou2525@163.com.

 
粤ICP备18138465号  © 2020-2024 STACKOOM.COM