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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.

How to create the checkbox validation rule in Salesforce Lightning Here you can see that we log in to our Salesforce account, this is my Salesforce Lightning account. ... Here the Object Manager page is open. ... After clicking on the Opportunity object, the Opportunity object page is open.

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

4 Replies $(function () { $('#someid_1').click(function () { var id = $(this).attr('id'); alert(id); }); });

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 + ' '); } }

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.

Sometimes you might want to submit the form just when the user clicks a checkbox, rather than making the user press the submit button. All what we will have to do is give an id to the form , I gave it an id of myform, then use jQuery to grab and submit the form.