How to provide password validation and also email validation for a registration form

My problem is lik this ,

I am trying to create a registration form using javascript for a HR website , but i dont know how to provide password validation i.e the password and confirmation password entered by the user should match ...and also email validation i.e email id entered by user should be in correct format ... i know how to do using php but dont know using javascript ...

Can anyone help me ....

Regards,
Shwetha

re: How to provide password validation and also email validation for a registration form

What have you got so far? Post your code.