how create a continuous loop that calls a function using a random generated interval

Question

I want to execute a function every specified seconds, and it should loop forever. When the function is finished I want to start a new setTimeout using a random generated value between 2 and 5 (represents seconds).

Maybe badly explained but..

this is what I have so far.

function Start() {
    let count = $("section.mosaic").find("a.item").length;

    ChangePic();

    setTimeout(function () {
        let interval = CREATOR.PUB.Utility.randomInterval(2, 5);

        console.log(interval);

    }, 3000);

    function ChangePic() {

    }
}

Is ChangePic the function that is supposed to be called every few seconds? — Hydrothermal
– Hydrothermal, Commented Dec 16, 2018 at 7:10

Hydrothermal · Accepted Answer · 2018-12-16 07:21:01Z

2

Move the interval code into ChangePic so that it can call itself when it finishes.

function Start() {
    let count = $("section.mosaic").find("a.item").length;

    ChangePic();

    function ChangePic() {
        // do stuff here

        let interval = CREATOR.PUB.Utility.randomInterval(2, 5);
        setTimeout(ChangePic, interval * 1000);
    }
}

Note that this will call ChangePic once immediately when Start runs, and the random intervals will begin thereafter. If you need the initial execution to be on a delay as well, you could either copy the timeout code and run it instead of calling ChangePic();, or move it into a helper function that you call both inside Start and ChangePic.

answered Dec 16, 2018 at 7:21

Hydrothermal

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