[jQuery] Checking for form changes

[jQuery] Checking for form changes

Hi all
I need to disable submission of a form unless something is entered
(radio selected, checkbox checked, text input inputted...).
At the moment I'm using jQuery to loop through all the
text/checkbox/radio input elements and check their type, value, and
selected status when submit is hit.
Is there a quicker way I can do this with jQuery?
Phill
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