A JavaScript Function That Returns a Function
Its a fad now in JavaScript to code functions that return functions in order to avoid declaring global variables but the procedure is inefficient and unnecessary. More ...
JavaScript Code for Binary to Decimal - Decimal to Binary Conversion
To convert a binary number to decimal add together the decimal weight of all positions that contain a 1. To convert a decimal number to binary place a 1 in all positions where you can subtract the weight of the binary position. More ...
HTML5 Canvas Drag-and-Drop
The HTML5 canvas element creates a sketchpad area on a webpage where you can use JavaScript to draw 2D shapes, graphics, animations, render bitmap images, and even create online presentations and build dynamic browser games. In this article you'll learn how to use drag-and-drop in your canvas projects. More ...
Java Script Code to Factor Numbers
Being able to factor numbers is an important skill, one that is necessary to work with equations, fractions and polynomials. In this article, I show you how to use Java Script to factor a number, therefore you will learn a little mathematics and a little programming at the same time. More ...
Easy Slide Show Code
One of the problems with creating such a slide show is that the images should all be the same size. If the images are not all the same size, your web page may grow and shrink as the different images
are displayed. More ...
Regular Expression: Alternation
In this article you learn how to create an alternation regular expression that will match alternate patterns in a string. More ...
Allowing Multiple Selections from Drop-down Select List
An HTML Select list is a form control used to create a drop-down list of items from which the user can select. You can allow the user to select multiple items in the list by setting its multiple attribute. More ...
Code for Java Script Circle/Sphere Calculator
In this article you learn how to use to Java Script to create a Circle/Sphere calculator. The user enters the radius of a circle or sphere, and the calculator returns the area, circumference, surface area, and volume. The process for coding any calculator can be broken down into a step-by-step procedure. More ...
How to Disable the Browser Back Button
Let's assume that you have a legitimate reason for disabling the back button. Maybe you need to restrain the user within a multi-page form. In this article, I show you how to disable the browser's Back button with a only few lines of Java Script code. More ...
JavaScript Code for Binary to Hexadecimal - Hexadecimal to Binary Conversion
You don't really need JavaScript to convert a binary number to a hexadecimal number, however if you want to create a web application the JavaScript code to convert a binary number to hexadecimal number and to convert a hexadecimal number to a binary number is shown below. More ...
Regular Expression Basics : How many Matches?
A Regular Expression (regex) is a sequence of characters that define a pattern that allows you to search, match, locate, replace, manipulate, and manage text. In this article you'll learn how to use regular expressions to count the number of matches. More ...
Easy Java Script Windows
This article gives you the basics of designing, opening, and closing browser windows using Java Script. In future articles, I will show you how to do all kinds of annoying things with windows using Java Script. More ...
