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How to detect if HTML form is edited with JavaScript?

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Sometimes, we want to detect if HTML form is edited with JavaScript.

In this article, we’ll look at how to detect if HTML form is edited with JavaScript.

How to detect if HTML form is edited with JavaScript?

To detect if HTML form is edited with JavaScript, we can listen to the input event.

For instance, we write

const form = document.getElementById("myForm");

form.addEventListener("input", () => {
  console.log("Form has changed!");
});

to select a form element with getElementById.

Then we call addEventListener to listen to the input event on the form.

It’s triggered if the form’s fields have been changed.

Conclusion

To detect if HTML form is edited with JavaScript, we can listen to the input event.

By John Au-Yeung

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

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