Login validation with jQuery remote

[eluser]Otemu[/eluser]
Client side validation is good in terms of user experience, for instance a user imputing a invalid email, or entering text when it should be a number, or maybe when entering there repeated password, etc, this way the user gets a faster response, which makes for a better user experience then receiving several errors all at once.

A common scenario normally is to have client side validation, then server side validation which can be sent via ajax requests or by a post back.