JavaScript to Generate a Random Number Between X and Y
You can use the JavaScript Math object's .random() method to generate a random number between two values, it returns a random floating-point number between 0 and 1 so you'll need to perform additional operations on it to scale it. More ...
Object-Oriented JavaScript
Once listed as nice to have, these days knowledge of JavaScript is a deciding factor when it comes to hiring web developers. This book treats JavaScript as a serious object-oriented language, showing you how to build robust, maintainable, and powerful libraries and applications. Read this book if you want to be able to take your JavaScript skills to a new level of sophistication. 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 ...
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 ...
Creating Java Script Dynamic or anonymous Functions at Runtime
In Java Script you can code a function at design time, or you can have Java Script write the function code during execution. A function that is created at runtime is called an anonymous or dynamic function. 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 ...
Date Picker For Your Web Site
In this article, I give you the code for a date picker calendar and I explain the code in detail so you'll feel comfortable modifying it for your own use. More ...
Easy Code to Sort a Table by Column
A Table is a powerful way to present information. You can make your table even more powerful by giving users the ability to sort it by different columns. In this article, I give you some simple Java Script code that you can use to make almost any table sortable by different columns. 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 ...
Code for Java Script Cylinder / Cone Volume Calculator
In this article I'll show you how to use to Java Script to create a cylinder / cone volume calculator. I'll explain everything in detail so that you can learn Java Script and modify the code for your own purposes. More ...
Slide Show with Different Size Images
In this article, I explain how to code a slide show that can display different size images without growing and shrinking your web page. I'll explain it in detail so that you can understand and feel comfortable using the code, then you can cut and paste the code into your webpage and modify it for your purposes. More ...
Using the Java Script Date Object
When you want to work with a date in Java Script, you need to use the Date object. In this article, you learn how to create a Date object for today, or for any date in the past or future. You learn how to find the difference between two dates, and how to format a date string any way that you desire. You also learn how to validate a date string returned from a text box in a form, which involved an introduction to JavaScript regular expressions. More ...
