Accept Checkbox Field For Free - Checkbox Field File

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.

Guys you can do this kind of validation very easily. Just you have to track the id or name of the checkboxes. you can do it statically or dynamically. For statically you can use hard coded id of the checkboxes and for dynamically you can use the name of the field as an array and create a loop.

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.

Syntax: It returns the Input Checkbox required property. checkboxObject.required. It is used to set the Input Checkbox required property. checkboxObject.required = true|false.

All Checkboxes have a boolean Variable property... when a Checkbox is ticked this variable is set to True (and vice-versa). If you want to react to the user checking (or unchecking the checkbox) you will have to set a handler for the OnChange event of the Checkbox.

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").

You can also use the below code to get all checked checkboxes values. <script> document.getElementById('btn').onclick = function() { var markedCheckbox = document.querySelectorAll('input[type="checkbox"]:checked'); for (var checkbox of markedCheckbox) { document.body.append(checkbox.value + ' '); } } </script>