underscorePractise5.js

(function() {
	var log = function(x) {console.log(x)}

	var x;

	var user = {
		name	: 'chuck',
		age		: 24,
		lang	: 'ja'
	};

	log(_.isString(user.age)); //false

	x = _.keys(user);
	//log(x);

	y = _.values(user);
	//log(y);

	z = _.invert(user);
	//log(z);

})();