How to stop a function during its execution in JavaScript?

JavascriptWeb DevelopmentObject Oriented Programming

To stop a function during its execution, use the concept of −

document.getElementById().addEventListener().

Example

 Live Demo

<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
<link rel="stylesheet" href="//code.jquery.com/ui/1.12.1/themes/base/jquery-ui.css">
<script src="https://code.jquery.com/jquery-1.12.4.js"></script>
<script src="https://code.jquery.com/ui/1.12.1/jquery-ui.js"></script>
</head>
<body>
<button type="button" id="call">Call the function</button>
<button type="button" id="halt">Stop the function execution </button>
<script>
   document.getElementById("call").addEventListener("click", callFunction);
   document.getElementById("halt").addEventListener("click", haltFunction);
   var timeValue = null;
   function callFunction() {
      timeValue = setInterval(function() {
         console.log("The call() is being executed....");
      }, 1000);
   }
   function haltFunction() {
      clearInterval(timeValue);
   }
</script>
</body>
</html>

To run the above program, save the file name anyName.html(index.html) and right click on the file and select the option open with live server in VS code editor.

Output

When you click Call the function button, it will execute the function. To stop the function, click Stop the function execution button.

The snapshot is as follows −

raja
Published on 16-Jul-2020 06:57:36
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