In order to keep the attackers away from the corporate networks we normally install firewalls. They are really useful in most cases but not much is known about them. Firewalls are nowadays very popular since they completely control access that comes from the outside and from the inside. Initially, this was used in order to prevent people from accessing some websites but now everything evolved to the point at which various advanced features are included, like stopping the Phone Home option that is sometimes used by viruses and malware.

Understanding the scope of variable and function, class in programming clearly is key to appreciating how your variables interact with the rest of your source code. In many languages, this can be quite straightforward, but JavaScript’s anonymous functions and event handling features, along with a little of quirks, mean that handling scope in your JavaScript applications can become frustrating.

This article discusses how JavaScript handles scope and how various JavaScript libraries provide methods for dealing with it and how they smooth out a few bumps. We’ll also look at how you can get back to basics and do some interesting scope wrangling without a library, a useful approach if you’re writing code that needs to stand alone.

This free JavaScript article presents some concepts, ideas about JavaScript - a most popular web programming language in client side, but many people misunderstands this language. Please go to the full post for details.

Debugging source code is the regular job to any programmers, and this job takes them a lot of time. With the programming languages at client side, such as JavaScript, the most common tool should be mentioned is the Firebug add-on, on Firefox; but this tool helps us to detect syntax errors only. This free JavaScript tutorial shares the author's experience in problem of debugging logic problems by using some simple ways. Please go to the full post for details.

This JavaScript tutorial show you how to use some simple methods/techniques for handling JavaScript exceptions in OOP (Object Oriented Programming). The knowledge of this JavaScript article likes as concepts, so it's easy to learn, please go to the full post for details.

Photography is a true art that helps creating exciting visual stories and experiences. And yet, no matter how exciting it is, if you want to make a business out of it, the competition can be really harsh. You really need some serious zest to stand out from hundreds of other photography websites. Every professional or amateur photographer has to have a solid portfolio to showcase his work on the net.

Making tutorials is a great way to establish yourself as an expert in your field while helping others. Web and graphic design tutorials are currently in high demand, as many newcomers flock to these lucrative, exciting areas. If you've got experience designing websites or graphics, or knowledge of how to build websites, apps, and other online content then you should consider making some tutorials to teach others your skills.

In this JavaScript article tutorial, jsB@nk is happy to show you another JavaScript solution to include external JavaScript files in your web pages. This JavaScript method uses DOM (Document Object Model) to process. Please go to the inner post-page for full completed instructions and JavaScript source codes for samples, along with many reality problems.

Try more other related JavaScript solutions for inserting external JavaScript files:
- Simple Tips and Code to Load External JavaScript, CSS Files Dynamically
- Loading External CSS & JavaScript Files Faster With PHP mod_rewrite
- How to use an external JavaScript
- The best way to load external JavaScript

This article will show you some OOP elemtary techniques in JavaScript, for example: creating classes, constructing instance methods, declare variables and methods,...

Programming and coding JavaScript applications, web applications are becoming easier, with the strong support from powerful JavaScript frameworks such as jQuery, MooTools. However, within the scope of this free JavaScript article tutorial, the author only discusses the events in JavaScript, through some definition: JavaScript mouse events, Adding Events - Easy with JavaScript frameworks, Events without the JavaScript Framework, JavaScript button events, jQuery events, Select the Element for Clicking, Events in Firefox/Safari/Opera/Chrome/Internet Explorer and so on, ... Please go to the full post page for more details.

Check more JavaScript events article tutorials for better coding tips:
- How to Build Custom events in JavaScript
- Top 10 JavaScript Frameworks by Google, Yahoo, Bing