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Editorial Team
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Asked: 2026-05-25T03:35:27+00:00

I am trying to write a javascript function that when called performs function DoSomething()

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I am trying to write a javascript function that when called performs function DoSomething() once,
but can be triggered to perform the function repeatedly until triggered to stop.

I am using setTimeout() function. I am not sure if this is best method from performance and memory point of view.
Also I would like to avoid global variable if possible

<!DOCTYPE html>
<html>
    <script src="jquery.js"></script>

    <script>
    var globalCheckInventory = false;

    $(document).ready(function(){
        // start checking inventory
        globalCheckInventory = true;                 
        myTimerFunction();  
    }); 

    // check inventory at regular intervals, until condition is met in DoSomething
    function myTimerFunction(){
        DoSomething();
        if (globalCheckInventory == true)
        {
            setTimeout(myTimerFunction, 5000);      
        }           
    }

    // when condition is met stop checking inventory
    function DoSomething() {     
        alert("got here 1 ");
        var condition = 1;
        var state = 2 ;
        if (condition == state)
        {
            globalCheckInventory = false;
        }        
    }
    </script>
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1 Answer

  1. Editorial Team

    This is probably the easier way to do what you’re describing:

    $(function () {
  var myChecker = setInterval(function () {
    if (breakCondition) {
      clearInterval(myChecker);
    } else {
      doSomething();
    }
  }, 500);
});
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