Written by In just one week, I have encountered this problem twice, so I think it's worthy of a post.
The problem was that a form needed to provide negative feedback while the user was entering data. I find this to be more useful than an all at once "You're missing <this> and <that>. Go back and fill them out or I will never accept your submission."
What better to solve this issue than the worlds greatest Javascript library, jQuery!
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