If you want to make sure that all of your JS code stays compliant to the style defined in your .jshintrc, you can set the following contents to your .git/hooks/pre-commit file, which is then run each time you try to commit any new of modified files to the project http://seravo.fi/2013/javascript-the-winning-style

pre-commit.sh

#!/bin/bash
# Pre-commit Git hook to run JSHint on JavaScript files.
#
# If you absolutely must commit without testing,
# use: git commit --no-verify

filenames=($(git diff --cached --name-only HEAD))

which jshint &> /dev/null
if [ $? -ne 0 ];
then
  echo "error: jshint not found"
  echo "install with: sudo npm install -g jshint"
  exit 1
fi

for i in "${filenames[@]}"
do
  if [[ $i =~ \.js$ ]];
	then
		echo jshint $i
		jshint $i
		if [ $? -ne 0 ];
		then
			exit 1
		fi
	fi
done