JavaScript to Set Checkbox to Readonly
The HTML checkbox element does not have a readonly attribute. This example provides a very simple work around that might help you solve the checkbox readonly problem in your own application. More ...
Calculators for Your Web Site : Body Mass Index
If you have a Web site related to health or dieting, or you just want to provide more useful features on your Web site, you can provide a BMI calculator. This article shows you how to code a Java Script BMI calculator for your Web site. More ...
Object-Oriented JavaScript
Once listed as nice to have, these days knowledge of JavaScript is a deciding factor when it comes to hiring web developers. This book treats JavaScript as a serious object-oriented language, showing you how to build robust, maintainable, and powerful libraries and applications. Read this book if you want to be able to take your JavaScript skills to a new level of sophistication. 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 ...
Basic State Machines
A State Machine is a program, logic circuit, or mechanical device, that has a finite number of legal states. For example a traffic control signal can be red, yellow, or green. It can't be red and green. It can't be violet. More ...
Working With the Keyboard in Java Script
Using Java Script you can determine which keyboard key the user pressed. You can use this information to block certain keys, to replace a key's character, or to perform an action based upon a specific key being pressed. In this article, I'll provide some basic code for working with the keyboard. More ...
Java Script Code for a Random Circle Generator
Have you seen some Web content that uses a group of several different size and color circles as a decoration? In this article I'll show you how to use a bit of Java Script code to draw a group of random size and color circles. More ...
Calculators for Your Website : Fahrenheit to Celsius Converter
In this article, I provide you with Java Script code for a Decimal to Fahrenheit to Celsius / Celsius to Fahrenheit Converter. I'll explain the code in detail so that you can have confidence modifying it for use on your website. More ...
HTML5 Canvas Storing and Clearing Transformations
With HTML5 Canvas, it's possible to save the current transformation, do some drawing and transforming, and then restore the old transformation. More ...
Code for Java Script Cylinder / Cone Volume Calculator
In this article I'll show you how to use to Java Script to create a cylinder / cone volume calculator. I'll explain everything in detail so that you can learn Java Script and modify the code for your own purposes. More ...
Easy JavaScript Picture Selector Code
Suppose you want to create a digital photo album to display a group of pictures, but you don't want the page to be too large. One solution would be to display only one full size picture, and the other pictures as small thumbnail images. More ...
Easy Code for Date Count Down
One of the most powerful incentives for people to make a purchase is scarcity, and one of the most popular ways to create scarcity is have a "limited time" offer. Web pages that present a limited time offer always have a count down timer to let you know how much time is left. More ...
