Enabling radio boxes with a certain criteria

[ellicoga]

I am creating a voting system in php.

I want the user to be able to select the first preference with the rest of the radio button disabled. Once the user has selected their preference, the second preference should be enabled except the candidate they have chose in the first radio box.

Is there anyway to do this?

[Kudose]

You'll need to use JavaScript for this.

A Google search yields plenty of results, but nothing worthy of link exchange.