How to wait for the end of the resize event and only then perform an action with JavaScript?

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Sometimes, we want to wait for the end of the resize event and only then perform an action with JavaScript.

In this article, we’ll look at how to wait for the end of the resize event and only then perform an action with JavaScript.

How to wait for the end of the resize event and only then perform an action with JavaScript?

To wait for the end of the resize event and only then perform an action with JavaScript, we use setTimeout.

For instance, we write

const onResizeDone = () => {
  // ...
};

let timer;
window.onresize = () => {
  clearTimeout(timer);
  timer = setTimeout(onResizeDone, 100);
};

to set window.onresize to a function that calls clearTimeout to clear the setTimeout timer.

Then we call setTimeout with onResizeDone with 100 to call it after 100 milliseconds after the resize event handler is called.

Conclusion

To wait for the end of the resize event and only then perform an action with JavaScript, we use setTimeout.

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