Javascript anonymous functions

Anonymous functions are functions that are dynamically declared at runtime. They’re called anonymous functions because they aren’t given a name in the same way as normal functions.

Anonymous functions are declared using the function operator instead of the function declaration. You can use the function operator to create a new function wherever it’s valid to put an expression. For example you could declare a new function as a parameter to a function call or to assign a property of another object.

Here’s a typical example of a named function:

1.  function flyToTheMoon()

2.  {

3.    alert("Zoom! Zoom! Zoom!");

4.  }

5.  flyToTheMoon();

Here’s the same example created as an anonymous function:

1.  var flyToTheMoon = function()

2.  {

3.    alert("Zoom! Zoom! Zoom!");

4.  }

5.  flyToTheMoon();

For more :  http://helephant.com/2008/08/23/javascript-anonymous-functions/