Manage Checkbox Log For Free

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>

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!

Create the function checkClickFunc() which is to be executed upon clicking the checkbox. Using the ?getElementById()? method, retrieve the checkbox by its id, ?agree?. Check the checkbox's status by using the ?checked? attribute. If it's ?true?, show an alert message ?Checkbox is clicked?.

AddEventListener('click', event => { if(event. target. checked) { alert("Checkbox checked!"); } });

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>

Checkbox event handling using pure Javascript Now what we need to do is to attach an event to the checkbox so it checks its state each time it's changed and show the message if it has been unchecked , notice I added a checked property to the checkbox so it is checked by default.

The state can be changed by providing the new state value or an updater function. The updater function takes the current state and returns the new state. The state related to a checkbox input is a boolean. When the state is false the checkbox is unchecked, when the state is true the checkbox is checked.