find -name "*.js" -not -path "./directory/*"

#example
find . -name "*.py" -not -path "./anaconda2/*"


# copy the files find to a directory
find -name "*.js" -not -path "./directory/*" -exec cp {} temp/ \;

find . -name "*.py" -not -path "./anaconda2/*" -exec cp {} pycoll/ \;