Wednesday, July 22, 2009

JavaScript Namespaces

It's important to namespace your JavaScript code. I want one "master" namespace, and everything else under it (like YUI's namespacing approach). I fell into some potholes of browser compatibility on the way (with var foo; if (!foo) foo = {};), but here's what I ended up with:

// define master namespace
if (typeof foo === "undefined") var foo = {};

(function(){ // lexical scoping, allows "private" variables and functions

// define sub-namespace
if (! = {};

// these don't leak outside
function helper() { /* ... */ } // "private" function
var counter = 0;                // "private" variable

// this function shows up globally under namespace = function(x) { /* ... */ };

// not just functions = 12; = [];

})(); // end of lexical scoping

This way all the JS files can use the same namespace hierarchy, and can still be defined separately. No JS library necessary.

Wednesday, July 15, 2009

IDCC 2009, call for content

The Israeli Developers Community Conference 2009 has started its call for content. It's a community conference centered on the .NET world.

If you have a session to propose, please do! The community will vote on the proposals, and the conference will conform to the participants - not the other way around.