Has anyone ever created a timer using JavaScript?

Asked by JohnRobert (490

) April 28th, 2010

I am creating an HTML page that has a button that when clicked, starts a timer starting at 00:00:00 and counts upward (hh:mm:ss). This is not for a homework… I’m learning this on my own. I looked at the examples in w3schools and the JavaScript examples there either display the system time or start counting 1,2,3,4… seconds. I have not been able to find an example anywhere a counter starts at 00:00:00 begins counting upward by seconds and uses the hh:mm:ss format. I’m open to using VBscript or something else. Thank you.

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3 Answers

I think the easiest thing to do is just use an existing timer that uses 1,2,3,4 syntax and convert it to hh:mm:ss yourself.

It should be a fairly straightforward conversion. You’re basically just doing two mods. (I imagine there are also some existing conversions you can find, but I’d say just dive in).

ben (9085

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To piggyback on what Ben said, you essentially need to solve: Given a number of seconds, convert that into hours, minutes, and seconds. Once you have that, you can dynamically display 2 hours, 10 minutes, 3 seconds into 2:10:03.

andrew (16562

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I’ll try the conversion method. Thank you both.

JohnRobert (490

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