Roko C. Buljan Roko C. Buljan - 1 year ago 229
Javascript Question

Randomize setInterval ( How to rewrite same random after random interval)

I'd like to know how to achieve:
generate a random number after a random number of time. And reuse it.

function doSomething(){
// ... do something.....

var rand = 300; // initial rand time

i = setinterval(function(){

rand = Math.round(Math.random()*(3000-500))+500; // generate new time (between 3sec and 500"s)

}, rand);

And do it repeatedly.

So far I was able to generate a random interval, but it last the same until the page was refreshed (generating than a different time- interval).


Answer Source

Here is a really clean and clear way to do it:

function doSomething() {}

(function loop() {
    var rand = Math.round(Math.random() * (3000 - 500)) + 500;
    setTimeout(function() {
    }, rand);


Explanation: loop only exists within the immediately invoked function context, so it can recursively call itself.

Recommended from our users: Dynamic Network Monitoring from WhatsUp Gold from IPSwitch. Free Download