Note that setting the checked content attribute (as opposed to the IDL attribute set with Javascript) to a non-empty string, the checkbox is checked. So if you set the 'checked' content …

Learn how to check if a checkbox is checked in JavaScript, jQuery, and HTML.

Jan 21, 2011 · For some reason, my form does not want to get the value of a checkbox... I am not sure if it is my coding or not, but when I try and alert() the value, I get undefined as a result. …

Jul 24, 2015 · Learn how to get the value of a checked checkbox using JavaScript or jQuery.

Jul 10, 2014 · I have a javascript routine that is performing actions on a group of checkboxes, but the final action I want to set the clicked checkbox to checked or unchecked based on if the …

Learn how to perform actions on checkbox checked or unchecked events in an HTML form.

Mar 9, 2017 · To check if a checkbox is checked in Javascript, examine its checked property.

Mar 6, 2020 · How can I check if a checkbox in a checkbox array is checked using the id of the checkbox array? I am using the following code, but it always returns the count of checked …

Multiple checkboxes Here's an example of a list of checkboxes. To select multiple elements we use querySelectorAll instead of querySelector. Then use Array.filter and Array.map to extract …

@KickingLettuce: !this.form.checkbox.checked is false if the checkbox is UNchecked (because of the ! operator). If you want a different alert to show when the checkbox is checked, you could …