Some js extensions

js+ext.js

String.prototype.capitalize = function() {
    return this.replace(/(?:^|\s)\S/g, function(a) { return a.toUpperCase(); });
};

String.prototype.contains = function(subStr) {
  return this.indexOf(subStr) !== -1;
};

String.prototype.containsWord = function(word) {
    var expStr = Mustache.render(" {{word}} |^{{word}} | {{word}}$|^{{word}}$", {word: word}); 
	return this.match(new RegExp(expStr, "i")) != null;
};