Binary Subtraction with Example JavaScript Code
The first step in a binary subtraction is to replace the subtrahend with its 2's complement. But many people do this wrong because they don't understand the importance of magnitude. More ...
Where Did the User Click?
This code creates a webpage with an html div containing the words ONE TWo THREE. A Java Script function uses the event object's clientX and clientY properties to determine which word the user clicked on and displays it in a message box. More ...
Java Script Code to Calculate Speed / Distance of Falling Object
In this article you learn how to use Java Script to perform gravity calculations, elapsed time, distance traveled, instantaneous velocity, how to use the onchange event, how to use radio buttons, and much more. More ...
Code to Fade Between Two different Pictures
You've probably seen websites where a picture fades out, being replaced by another picture that fades in. This effect is called a visual transition and it's easy to do with just a tiny bit of code. More ...
Easy Java Script Animation
There are many ways to create an animation, but the simplest way is to use Java Script along with CSS. In this article, I show you how to create simple Java Script animations. More ...
Including Special Characters in a JavaScript String
In JavaScript you define a string by placing its characters within double quotes. More ...
Prevent Automated Form Submissions With Java Script
Spammers have robots that search the Web for such forms and when they find one, they use automated programs to submit thousands of spam. Webmasters have developed a method to prevent such abuse. In this article, I show you three different examples of using Java Script to implement this method for your own web form. 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 ...
Java Script Code to Re-arrange Items in a Select List
In this article you'll learn how to use Java Script to re-arrange items in a select list. I'll explain the code in detail so that you'll be able to fully understand and modify it for your own use. More ...
Java Script Math Object Trigonometric Methods
This article describes the Java Script Math object .sin, .cos, and .tan methods along with how to convert degrees to radians and how to set the number of digits to the right of the decimal point. 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 ...
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 ...
