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 ...
Java Script Code for Directory File List
In this article You'll learn how to create a webpage that gives a list of the files in a folder. This example is for use with Internet Explorer Web browser on your local computer. 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 ...
Regular Expression Basics : Match a Set of Characters
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 match a set of of characters. 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 ...
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 ...
Easy Slide Show Code With Linked Slides
A slide show sequences through pictures of products. Wouldn't it be nice if the user could stop the slide show, go back to the previous picture, click on the picture to get detailed information about the product? More ...
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 ...
A JavaScript Function That Returns a Function
Its a fad now in JavaScript to code functions that return functions in order to avoid declaring global variables but the procedure is inefficient and unnecessary. 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 ...
Prevent Automated Form Submissions With Java Script
Spammers have robots that search the Web for such forms and when they find one, they use automated programs to submit thousands of spam. Webmasters have developed a method to prevent such abuse. In this article, I show you three different examples of using Java Script to implement this method for your own web form. 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 ...
