The string into a regular expression By RegExp Class

StringToRegExp.js

/**
 * The string into a regular expression By RegExp Class
 * 
 * @author Bacra Woo <Bacra.Woo@gmail.com>
 */
var toRegExp = function(str){
	var mark;
	return new RegExp(str.substring(1).replace(/\/([igm]*)$/, function(match, modifiers){
		mark = modifiers;
		return '';
	}), mark);
};