Easy Picture Zoom Code
This article provides the minimal code for four different methods to add zoom to the pictures on your Web page. The first method uses a single image. When you click on the image a JavaScript function is used to enlarge the image. More ...
Easy Java Script Butterfly Animation
You'll be surprised at how little code it requires and how easy it is to use Java Script along with CSS to create an animation. In this article, I show you how to create a simple butterfly animation. More ...
Java Script Math Object Trigonometric Methods
This article describes the Java Script Math object .sin, .cos, and .tan methods along with how to convert degrees to radians and how to set the number of digits to the right of the decimal point. More ...
Java Script Comparison Operators
A comparison operator compares two values and returns the result "true" or "false". For comparing numeric values the operators perform the same as they do in algebra. For comparing character strings each character in the strings are converted to their ASCII values and then a numeric comparison is made. 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 ...
JavaScript 24-Hour Trainer
JavaScript has matured from making Web pages dynamic to making them interactive, providing users with a rich and memorable Web experience. This unique book-and-DVD package prepares you for the new generation of Web browser changes that are occurring on the ever-evolving Web and shows you how JavaScript is an essential component of those changes. 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 ...
Display a Value in Currency Format
To display a value in currency format we first round the value to the required number of decimal places, then determine if we need to add trailing zeros. 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 ...
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 ...
Java Script Trim Function
In any case, I offer the following code for a Java Script Trim function. My goal for this code is not to set a speed record or demonstrate my programming prowess, but instead to provide something that is easy to understand so that you might feel confident in using it in your own projects. More ...
Creating Basic Java Script Functions
In this article you learn how to create basic Java Script functions. You learn how to use parameters and how to return values, including how to return an array from a function. The article also intoduces variable scope. More ...
