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Check for numbers in Velocity template

 
Ranch Hand
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Hi all,
I wanted to know how to check if an input is a number in Velocity template, i.e for validation on client side.
I am posting Velocity related question in JSP forum because I could not find one for Velocity.

Thanks in advance
 
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I have moved the post to a more appropriate location.
 
It is sorta covered in the JavaRanch Style Guide.
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