How to run a loop at a defined interval in JavaScript

Question

I am working on a web project, and I need a loop that will loop every 5 or 6 seconds. I want to be able to activate a block of code to change part of the page. How can I do this without crashing the page?

Do you have any code already written? Give us something to go off of. — Danny Delott
– Danny Delott, Commented Jun 17, 2015 at 0:42
Look into jQuery timer plugin or .delay() function api.jquery.com/delay — Armaiti
– Armaiti, Commented Jun 17, 2015 at 0:46

Danny Delott · Accepted Answer · 2015-06-17 00:46:11Z

4

JavaScript has a native setInterval function that allows you to run a specific block of code at a defined interval.

Try something like this:

var someFunction = function(){
  // define your loop here
};

var interval = 5000; // 5000 milliseconds is 5 seconds.

setInterval(someFunction, interval);

answered Jun 17, 2015 at 0:46

Danny Delott

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ChadF · Accepted Answer · 2015-06-17 00:42:55Z

3

You should use the native setInterval function

You can get more information here: https://developer.mozilla.org/en-US/docs/Web/API/WindowTimers/setInterval

Say the block of code you wish to activate is a function called everyFiveSeconds

Your code would be: setInterval(everyFiveSeconds, 5000); The interval is counted in milliseconds

answered Jun 17, 2015 at 0:42

ChadF

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