How to stop a function during its execution in JavaScript?

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

document.getElementById().addEventListener().

Example

 Live Demo

Call the function
Stop the function execution 

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 −