JavaScript function overloading

This is a simple example of function overloading in JavaScript using closures to overload a Users.find() method, we can overload the method with either a name or a first name, last name.

Thanks to Steve Jansen http://steve-jansen.github.io/ for this example

(function(){
 function findAll() {
 // Find all users...
 }

 function findByFullName(name) {
 // Find a user by name
 }

 function findBySurname(first, last) {
 // Find a user by first and last name
 }

 Users.prototype.find = function find() {
 if (arguments.length === 0)
 return findAll.apply(this);

 if (arguments.length === 1 and typeof(arguments[1]) === 'string')
 return findByFullName.apply(this, arguments);

 // by default, search using first and last name
 return findBySurname.apply(this, arguments);
 }
})();

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