Validating a checkbox

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I usually work with PHP so sadly don't have some basic JS principles down.

This is all I want to accomplish--I've seen many posts on this topic but they are usually beyond what I need.

The idea is that at least one check box should be checked.

I have an on Submit for the form and a JS function that suppose to check it but it does not work.

HTML5 Form Validation doesn't allow submitting a form if a required checkbox is unchecked.

validating a checkbox-71validating a checkbox-56

Additionally, as of any checkbox in a form with a value of false, even if it's not required, renders the entire form invalid.When the checkbox is valid (checked) the message is set to blank which tells the browser that it's ok for the form to be submitted.When the checkbox is not checked and the Submit button is clicked an alert is displayed similar to the examples above, but using our text instead of the default.All you need to do is include a This tells the browser that the form should not be allowed to submit without the checkbox checked.Some, but not all, browsers will recognise and enforce this: The advantage of the HTML5 form validation is that it happens before our Java Script is called, displays instructions and points the user to the relevant element.

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