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Clicking on the checkbox or the label text will now toggle the checkbox state, and the text will change from red to green. Basically, when the checkbox is happy, the label is happy. The HTML for this example is the same as above. For more examples like this check out our new article Styling a Yes/No Checklist with CSS.

The validation of the checkbox in javascript can be done using the checked property of the checkbox element. This property returns true when the checkbox is selected. The addEventListener() method can be used to apply the change event to the checkbox to validate whenever the user interacts with the checkbox.

Different JavaScript codes to get marked checkboxes value <script> document.getElementById('btn').onclick = function() { var markedCheckbox = document.getElementsByName('pl'); for (var checkbox of markedCheckbox) { if (checkbox.checked) document.body.append(checkbox.value + ' '); } }

Clicking on the checkbox or the label text will now toggle the checkbox state, and the text will change from red to green. Basically, when the checkbox is happy, the label is happy. The HTML for this example is the same as above. For more examples like this check out our new article Styling a Yes/No Checklist with CSS.

In JavaScript, we can access the checkbox element using id, class, or tag name and apply '. checked' to the element, which returns either true or false based on the checkbox is checked.

Use the jQuery prop() method to check or uncheck a checkbox dynamically.

Checking if a checkbox is checked First, select the checkbox using a DOM method such as getElementById() or querySelector() . Then, access the checked property of the checkbox element. If its checked property is true , then the checkbox is checked; otherwise, it is not.

The <input type="checkbox"> defines a checkbox. The checkbox is shown as a square box that is ticked (checked) when activated. Checkboxes are used to let a user select one or more options of a limited number of choices.