Underscore js rocks

Hello World;

It's time for enlightnement.
Let me introduce you Underscore.js. It's a  small js library that provides lot of functional programming features, which is missing in native js implementations.

How to install it? Very simply - just copy file from this page
http://underscorejs.org/

or from git:
https://github.com/documentcloud/underscore

Put a file in you project folder, link to  it from the main page. In my case it looks like this:

// link to your underscore file

Now you should have new global js object named Backbone. Test it in chrome dev.tools:

// examine Backbone object

    dir(Backbone);

And finally lets see underscore in action (btw shorthand for library is_" ) with one example:

   Range function:

// assign the result to variable range

    var range = _.range(5,10,2)

// log in developer tools

    console.log(range);

         Output is [5,7,9]

Guess what is happening ?
Hint: pay attention to third paramater.

Underscorejs if full of utility functions that you can find in languages like Python of PHP. It is bringing more power and flexibility to Javascript and to your projects in general.
Also, it is a important part of jQuery and Backbone.
Feel free to experiment, it is fun with this great library.

Happy Coding.