Javascript Object#try

try.js

// attempts to call a function; returns undef if function is not defined
Object.prototype.try = function(name, args){
  return this[name] ? this[name].apply(this, args) : undefined;
};

// more robust version
Object.prototype.try = function(name){
  return this[name] ? this[name].apply(this, Array.prototype.slice.call(arguments, 1)) : undefined;
};