JavaScript: Disabling and Enabling Form Fields Dynamically Support

Sometimes you have a form that has dependencies. By this I mean that one (or more) field's values depend on another field's values. For example, you may not want the user to fill in field B until the user has filled in field A.

One way to solve this is to dynamically hide and show form fields, which we have talked about in the past. Some people don’t like parts of their form disappearing and reappearing on them, however. If that is the case what you can do is disable and enable them instead.