JavaScript Variable Scope
Understanding variable scope is very important, because if you don't use scope properly, you could end up with unexpected results and a very confusing bug. The scope of a variable refers to the parts of the code from which it's visible. More ...
JavaScript to Replace All Occurrences of a Substring Within a String
If you have a string with multiple occurrences of a substring within and you want to replace every occurrence of that substring with a different substring, this article provides a simple code example. More ...
Regular Expressions Subexpressions
In this article you learned how to use subexpressions to rearrange matches in a regular expression and how to replace the value of a subexpression match in the results. More ...
Code to Add Music to Your Webpage
Some people think it's discourteous and annoying to have music playing on your webpage. But, hey, it is your webpage, and it depends upon your websites audience and purpose as to whether music is appropriate. In this article I show you how easy it is to configure music on your webpage. More ...
Easy Java Script Form Validation
You can use forms on your website to get information from the visitor. However a user might make an error, or forget and entry in a form. Ignorant and malicious users may deliberately enter trash into your form in an effort to break your application. More ...
Easy Java Script Butterfly Animation
You'll be surprised at how little code it requires and how easy it is to use Java Script along with CSS to create an animation. In this article, I show you how to create a simple butterfly animation. More ...
Easy Animated Banners with Java Script
In this article, I will show you how to use Java Script to create an animated banner. Using Java Script allows you to edit or replace images in the animation sequence, and change the amount of time each image is displayed without doing any recompiling. More ...
Code for Java Script Cube / Box Volume Calculator
In this article I'll show you how to use to Java Script to create a Cube / Box Volume calculator. With this calculator, the user inputs the side dimension of a cube or the height, width and length of a box, and the calculator will return the volume. I'll explain everything in detail so that you can learn Java Script and modify the code for your own purposes. More ...
How to Shuffle the Deck With Java Script
In this article, you learn how to get and set a webpage element's z-index. The example code provided used these principles to shuffle a small deck of playing cards by clicking or double-clicking on their images. You might use this information to create your own webpage card game, or for some other interesting application. More ...
Regular Expression Position Matching
In this article you how to use regular expressions to match characters at the beginning, end, both beginning and end, or at any specified location in a string. More ...
A Cross-Browser Solution for Handling JavaScript Events
One area of JavaScript that is full of inconsistencies and a source of frustration is working with browser events. In this article we implemet a cross-browser solution for handling events. More ...
Introduction to HTML5 Canvas
The canvas element is a webpage container for graphics. You can use JavaScript to draw graphics within the canvas element. Learn how to draw lines, rectangles, circles, and curves, code included. More ...
