javascript trim, ltrim, rtrim

gistfile1.js

String.prototype.trim = function() {
  return this.replace(/^\s*-,"").replace(/\s*$/, "");
};

String.prototype.ltrim = function() {
  return this.replace(/^\s+/, "");
};

String.prototype.rtrim = function() {
  return this.replace(/\s+$/, "");
};