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How to determine if a checkbox is checked with JavaScript?

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Sometimes, we want to determine if a checkbox is checked with JavaScript.

In this article, we’ll look at how to determine if a checkbox is checked with JavaScript.

How to determine if a checkbox is checked with JavaScript?

To determine if a checkbox is checked with JavaScript, we use the checked property.

For instance, we write

<label><input id="lifecheck" type="checkbox" />Lives</label>

to add a checkbox.

Then we write

const checked = document.getElementById("lifecheck").checked;

to select the checkbox with getElementById.

And then we check if it’s checked with the checked property.

Conclusion

To determine if a checkbox is checked with JavaScript, we use the checked property.

By John Au-Yeung

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

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