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check if user already exists dynamically in servlet  RSS feed

 
Mo Alexwainy
Greenhorn
Posts: 12
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hi,
I need to check if user already exists in db using servlet whenever the user changes the input (onChange).
i need to perform this without going to another page or submitting a form button as i need an alert message or display message showing (user already exists).
 
Swastik Dey
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Android Eclipse IDE Java Java ME
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You need to look for AJAX.
 
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