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The Input Checkbox defaultChecked property in HTML is used to return the default value of checked attribute. It has a boolean value which returns true if the checkbox is checked by default, otherwise returns false.

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. Tip: Always add the <label> tag for best accessibility practices!

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.

A checkbox is an HTML element that takes input from the user. It is possible to style a checkbox using Pseudo Elements like :before, :after, hover and :checked. To style the checkbox the user first needs to hide the default checkbox which can be done by setting the value of the visibility property to hidden.

In this example, we are using is() method of jQuery to validate a checkbox is checked or not. <script> $(document).ready (function () { $('input [type="checkbox"]').click (function () { if ($(this).is(":checked")) { $("#result").html ("Thanks for subscribe the form");

Input Checkbox value Property Return the value of the value attribute of a checkbox: getElementById("myCheck"). value; ... Change the value associated with the checkbox: getElementById("myCheck"). value = "newCheckboxValue"; ... Submitting a form - how to change the value associated with the checkbox: getElementById("myCheck").

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.

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 + ' '); } }