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

Nov 21, 2011 · However, document.getElementById('checkbox').checked = true and document.getElementById('checkbox').checked = false work as expected (but don't trigger a …

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 10, 2014 · So when someone checks that box, the server receives a variable named test with a value of 1 - what you want to check for is not the value of it (which will never change, …

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 …

Mar 9, 2017 · I need to make 5 checkbox which all have a value, going from 1 to 5, I need to print out in a textbox the value when I check one, I can uncheck the boxes and the number …

Jul 24, 2015 · if you using after an event occurred you can use. const selected = event.target.checked; //true or false An example would be if you want to track selected items, …

Nov 29, 2011 · For those using a framework like React that binds the Application context to "this" in the callback, you should use checkbox.target.checked instead of checkbox.checked – …

@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 …

I have a checkbox on a form which is unchecked by default as usual. Now I want to perform two separated actions on the checked and unchecked state of this checkbox. This is my checkbox: …