Question

137

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

rated 0 times [ 138] [ 1] / answers: 1 / hits: 60357 / 13 Years ago, fri, august 5, 2011, 12:00:00

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(){



     doSomething();

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



}, 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).

Thanks

Answers

Only authorized users can answer the question. Please sign in first, or register a free account.

alejandro

Add To Favorites

Follow

Total Points: 231

Total Questions: 102

Total Answers: 107

Location: Jordan

Member since Wed, Jun 17, 2020

4 Years ago

alejandro questions

1 Discord.js v13 code breaks when upgrading to v14

Mon, Jul 18, 22, 00:00, 2 Years ago

1 React Image Magnifiers not working when zoom in using nextjs

Fri, Sep 18, 20, 00:00, 4 Years ago

1 Discord.js bot responds when mentioned

Thu, Sep 10, 20, 00:00, 4 Years ago

1 how to get input field value on button click in Vuejs or in vanila javascript?

Sun, Aug 9, 20, 00:00, 4 Years ago

1 How do I set a user's voice channel when I have the user's id?

Thu, May 21, 20, 00:00, 4 Years ago

View All

answered 13 Years ago conorm · Accepted Answer

Here's a reusable version that can be cleared. Open-sourced as an NPM package with IntelliSense enabled.

Utility Function

const setRandomInterval = (intervalFunction, minDelay, maxDelay) => {

  let timeout;



  const runInterval = () => {

    const timeoutFunction = () => {

      intervalFunction();

      runInterval();

    };



    const delay = Math.floor(Math.random() * (maxDelay - minDelay + 1)) + minDelay;



    timeout = setTimeout(timeoutFunction, delay);

  };



  runInterval();



  return {

    clear() { clearTimeout(timeout) },

  };

};

Usage

const interval = setRandomInterval(() => console.log('Hello World!'), 1000, 5000);



// // Clear when needed.

// interval.clear();