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How to programmatically force an onchange event on an input with JavaScript?

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Sometimes, we want to programmatically force an onchange event on an input with JavaScript.

In this article, we’ll look at how to programmatically force an onchange event on an input with JavaScript.

How to programmatically force an onchange event on an input with JavaScript?

To programmatically force an onchange event on an input with JavaScript, we use the Event constructor.

For instance, we write

const element = document.getElementById("input");
const event = new Event("change");
element.dispatchEvent(event);

to call getElementById to select the input element.

Then we create a new Event object that triggers the change event.

And then we call element.dispatchEvent with event to trigger the change event.

Conclusion

To programmatically force an onchange event on an input with JavaScript, we use the Event constructor.

By John Au-Yeung

Web developer specializing in React, Vue, and front end development.

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