Question

16

SetInterval() with if condition in js function

rated 0 times [ 22] [ 6] / answers: 1 / hits: 16572 / 7 Years ago, sun, october 8, 2017, 12:00:00

I would like to continuously call the function below using setInterval() but only if the condition in the if statement evaluates to true.
Note: The function is global.

function view_stack(){

    if(my_stack.size() > 0){

        document.getElementById(stack_visual).innerHTML = my_stack.view();

    } else {

        swal(Ohhhh Noes, There are no items in the stack!, error);

    }

}

Is there a way I can achieve it?

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georginat

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4 Years ago

answered 7 Years ago mira · Accepted Answer

Make it so that your function does nothing when there is nothing to do. That way you can simply keep the interval running.

Effectively your code already is written like that, I would rearrange it like this:

function view_stack(){

    if(my_stack.size() === 0) return;

    document.getElementById(stack_visual).innerHTML = my_stack.view();

}



setInterval(view_stack, 1000);

The more elegant solution would be event-based, i.e. whenever my_stack changes, update the view.