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Home / Blog / Web Development / JavaScript

JavaScript

Covers JavaScript, the most popular browser scripting language, and some clever tips & tricks.

See also:
  • The Document Object Model
  • jQuery
  • JavaScript Arrays

Form Validation with JavaScript

17 October 2001 / 76 Comments

This tutorial will show you how to create a JavaScript-enabled form that checks whether a user has filled in the form correctly before it’s sent to the server. This is called form validation. First we’ll explain why form validation is a useful thing, and then build up a simple example form, explaining things as we go along. At the end, there’s a little exercise to keep you busy too!

[Read more…] about Form Validation with JavaScript

Making a Rollover Menu Bar

12 December 1998 / 2 Comments

This Photoshop 4 tutorial (also works with later versions of Photoshop) is quite a big one. I’ll show you how to make one of those trendy menus that look like one image, but are in fact several images joined together, with each image changing as the mouse moves over them. Oh, words will never do – take a look at it in action!

[Read more…] about Making a Rollover Menu Bar

Rollover Buttons with JavaScript

7 September 1998 / Leave a Comment

These days every man and his dog is using JavaScript to create “rollover”, or “mouse-sensitive” buttons on their site. If you’re not sure what I’m talking about, move your mouse over this baby:

Button

Get the idea?
[Read more…] about Rollover Buttons with JavaScript

A Simple JavaScript Drop-down Menu

17 January 1998 / Leave a Comment

In this tutorial we’re going to design a simple menu system using JavaScript and an HTML form containing a SELECT list.

[Read more…] about A Simple JavaScript Drop-down Menu

Opening Windows with JavaScript

5 December 1997 / Leave a Comment

One of the most useful (and quite possibly the most abused) features of JavaScript is its ability to manipulate browser windows. It can be very handy for creating a pop-up navigation.

Multiple pop-up windows can be a real pain, especially now that certain free web space companies are getting in on the act as a method of advertising, so go easy on them. A good rule of thumb is: if you’re opening two new windows, you’re opening one too many!

[Read more…] about Opening Windows with JavaScript

Introduction to JavaScript

21 September 1997 / Leave a Comment

JavaScript’s a great language. I love it. It may not have the speed or power of Java or C, or the tight integration of ActiveX, but on the plus side it’s interpreted (no messing about with compilers), fast to load, easy to debug and it embeds itself neatly into your web page.

Most important of all, it’s easy to learn. Hopefully if you’re fairly new to the language, these tips will help get you started. Even seasoned JavaScript coders may learn a thing or two from these tips – you never know!

This tutorial shows you how to get started with JavaScript. We’ll look at how to embed JavaScript in your web page, and how JavaScript talks to your web browser. I’ll illustrate these points by building a simple program to display an alert box when the page is first loaded.

[Read more…] about Introduction to JavaScript

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