JavaScript to Replace All Occurrences of a Substring Within a String
If you have a string with multiple occurrences of a substring within and you want to replace every occurrence of that substring with a different substring, this article provides a simple code example. More ...
JavaScript Code to Restrict Keyboard Entries
This article shows you how to restrict the user's keyboard input to a textbox to only the digits 0 and 1. You should to be able to modify the code for your own purposes. More ...
Debugging JavaScript : Coercions
JavaScript is not a tightly typed language. Sometimes this comes in handy, but other times it can cause problems. 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 ...
Convert Mixed Number to Decimal
Wouldn't it be convenient if the user was allowed to enter mixed numbers into a form rather than having to mentally convert them decimals? This code is designed to accept both decimal and mixed number input. 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 ...
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 ...
Use JavaScript parseInt() and parseFloat() to Convert Strings to Numbers
If the results of a mathematical operation in your script are not what you expected, make sure that you convert any numbers represented as strings to the actual number data type before performing the operation. 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 ...
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 ...
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 ...
Introduction to HTML5 Canvas
The canvas element is a webpage container for graphics. You can use JavaScript to draw graphics within the canvas element. Learn how to draw lines, rectangles, circles, and curves, code included. More ...
