Question

Possible Duplicate:
JavaScript: var functionName = function() {} vs function functionName() {}

There are two ways to declare a function in Javascript:

Syntax 1:

function myFunction() {
    // something awesome
};

Syntax 2:

var myFunction = function() {
    // somtehing even more awesomer
};

It seems to me that I come across Syntax 1 a lot more in legacy code than in well written code (but that’s purely empiric).

Q: Should prever a syntax over the other, and why ?

Answer 1

The only difference that I can think of is here:

This code does not run: http://jsfiddle.net/JdCRq/

myFunction();

var myFunction = function() {
    console.log('test');
};

While this code does: http://jsfiddle.net/JdCRq/1/

myFunction();

function myFunction() {
    console.log('test');
}

function blocks, in the context of the second example, seem to be declared (at least by name) before the code is actually run.