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 ...
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 ...
Using the Java Script Array Object
When you want to work with multiple related values, you can use the Array object. The new keyword is required when creating an array of object type data, like an array of string objects. The new keyword is not required when creating an array of simple variable types, like integers. In this article you learn about mutidimensional arrays, and study examples of how to use each Array Object method. More ...
Easy Java Script Timer Code
Sometimes you need something to happen after a delay, or you need something to occur repeatedly. This can be accomplished using Java Script timers. My objective in this article is to give you the timer code without surrounding it with a lot of confusing peripheral code so you can quickly use it for your own purposes. 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 ...
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 ...
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 ...
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 ...
Four Ways to Use Java Script Event Handlers
Almost everything on a webpage is an "object". Almost all objects can respond to an event. You can control what an object does in response to an event by creating an event handler. In this article, you'll learn four different ways to connect an event handler to an event. More ...
Create a Mouse Click Sound Effect
One way to add to the exerience of visiting your website is to provide sound effects. It's extremely easy to add a click sound when a visitor clicks on a link. More ...
Put Commas in Your Java Script Calculators
Writing large numbers with the digits in groups of three make the numbers easier to read. In this article you'll learn how to code calculator applications that will accept the entry of numbers with commas, and return results with commas. More ...
How to Place Image on HTML5 Canvas
The canvas element is a webpage container for graphics. You can use JavaScript to draw graphics within the canvas element. In this article to learn how to place an image on a canvas with example code. More ...
