Using a Select List for Navigation
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 use a select list as a navigation element by setting each option element's value attribute to the URL of a web site or web page. More ...
Java Script Code to Move Items Between Select Lists
In this article you'll learn how to use Java Script to move items from one select list to a second 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 ...
How to Use HTML5 canvas arc and arcTo Functions
This article describes how to draw arcs using the canvas arc and arcTo functions with example code and an explanation of radians. More ...
Java Script to Get Selected Item from Select List Option Group
Since you may have identically named items in multiple optgroups, you need to a way to get the name of the optgroup as well as the name of the option. The code in this article shows you how. 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 ...
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 ...
Code to Drag and Drop an Image Anywhere on a Webpage
HTML5's drag-and-drop standard is designed to let you drag text or data from a textbox or table cell, to another textbox or table cell. But what if you want to drag an image, not to a target element, but to anywhere on a webpage. Then HTML5 drag-and-drop falls short. 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 ...
What is a Regular Expression?
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. Regular expressions are very powerful, but also difficult to understand and complicated to use. More ...
Password Protection Using the Frames Method
One method of password protecting your webpages is to use a cookie, but cookies are unreliable. If you can't trust a cookie to store the information that the user is logged in, where can you store it? In this example I'll show you how to use frames for JavaScript password security. 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 ...
JavaScript Code to Add or Remove Specific Elements of an Array
Arrays are very useful in programming because they can be used like a data base. In this article you learn JavaScript with code examples to add or remove specific elements of an array. More ...
