Tool to combine multiple javascript files into one... -

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is there tool can combine multiple javascript files 1 , compress them?

for php, try minify: http://code.google.com/p/minify/

from docs:

minify php5 app helps follow several of yahoo!'s rules high performance web sites.

it combines multiple css or javascript files, removes unnecessary whitespace , comments, , serves them gzip encoding , optimal client-side cache headers.


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