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What it really means when people say “Everything in JavaScript is an object”

By Elisabeth Robson
May 30, 2014

When you begin programming with JavaScript you might run across books, tutorials, and people who say “Everything in JavaScript is an object.” While it’s not 100% true (not *everything* is an object), it is *mostly* true. And sometimes this can …

Dos and Don’ts in JavaScript

By Elisabeth Robson
May 20, 2014

  With every programming language, there’s a list of do’s and don’ts and JavaScript is no exception. Some of these best practices are there for your protection (like always always always using semi-colons!); some to make your code more readable …

I just slipped on a banana peel named “this”

By Elisabeth Robson
May 14, 2014

In JavaScript, the special variable this is used to refer an object. But which object this refers too depends on the code you’re executing and how this is used. So, a common problem for those learning JavaScript is keeping track …

What is that upside-down tree doing in my browser?

By Elisabeth Robson
May 7, 2014

The secret to getting your web pages to do your bidding with code is to use JavaScript to manipulate the Document Object Model, or DOM. The DOM is an upside-down tree-like structure that the browser uses to represent your web …

Wait, where is my variable defined?

By Elisabeth Robson
April 30, 2014

  You may have noticed that Head First JavaScript Programming is released! Now that the book is done, we’ve got a few more Head First JavaScript Programming teasers for you. The book is aimed at those of you who are …

JavaScript Flexibility: Fun, But Use with Care

By Elisabeth Robson
May 21, 2013

When you begin programming in JavaScript, you’ll need to use variables. A variable is just a bit of storage to hold a value. Just about every line of code you write will use a variable of one kind or another, …

JavaScript Makes Browsers Behave

By Elisabeth Robson
May 14, 2013

If you know HTML and CSS, you’re ready to begin learning JavaScript. But you might be surprised, because JavaScript looks quite different from both HTML and CSS. That’s because JavaScript is a language for computation. Unlike HTML, which is for …

Cutting Your Programming Teeth on JavaScript

By Elisabeth Robson
May 7, 2013

JavaScript is a bit different from other programming languages. How? Well, JavaScript runs in an environment, and that’s usually the browser. So when you learn JavaScript, you’ll learn both the language basics, as well as how to use JavaScript in …

Top security threats to Flash/Flex applications and how to avoid them - Part 2

By Elad Elrom
June 4, 2010

Cross-Site Scripting (XSS) is a vulnerability that allows attackers to inject client-side script. XSS stands for many of the attack we see on the Web today. Attackers find some kind of a creative way to inject script into web pages, which than allow them to expose the user to many security risks

iTunes DJ AppleScript: Fade to Next Track

iTunes DJ AppleScript: Fade to Next Track
By David Battino
May 29, 2009

A radio DJ who runs her set from iTunes asked me if I could modify one of my fade-out AppleScripts. She wanted to end a song on demand and make iTunes crossfade into the next song on the playlist. I...

Spring Getting into a Groove with Groovy: SpringSource Acquires G2One

Spring Getting into a Groove with Groovy: SpringSource Acquires G2One
By Timothy M. O'Brien
November 12, 2008

Rod Johnson and Graeme Rocher discuss SpringSource's acquisition of G2One. In this 20 minute interview, both Johnson and Rocher discuss the differences between Groovy and other scripting lanuages available on the JVM and why they believe that Groovy on Grails provides the path of least resistance for enterprise web application development.

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