Javascript String.prototype.trim(/* optional list of chars to trim*/) and String.prototype.reverse(); /*reverse a string*/
String.prototype.reverse = function(){ return this.split("").reverse().join(""); } String.prototype.trim = function (list) { var list = ' '+list; word=this; while(list.indexOf(word.substr(0,1)) > -1) word = word.substring(1); word = word.reverse(); while(list.indexOf(word.substr(0,1)) > -1) word = word.substring(1); word = word.reverse(); return word; }