In JavaScript variables and properties are the same thing JavaScript like all other programming languages provides ways to refer to the place in the computer where the values you are processing ... Read More

If you use unobtrusive code to attach games to your page, those without JavaScript need not know they are there. Another variant on the concentration/memory game. This one works identically to ... Read More

Many of the script libraries that can be used with JavaScript suffer from the problem of being huge and taking a long time to download. If you are going to use ... Read More

regular expressions can test more than one line at the same time The eighteenth tutorial on "Regular Expressions" shows you how to process a regular expression against multiple lines of text ... Read More

The weather on the web is under your control using JavaScript Where I live it is Summer. For those of you in the northern hemisphere it is Winter and for ... Read More

Sometimes a simple modification to an existing calculator can make it much more useful. This JavaScript "calculator" will allow visitors to your site to obtain not only the distance between ... Read More

JavaScript can put a fireworks display on your page - no images required Share any celebrations with visitors to your web site with a fireworks display right on your web page.Fireworks

JavaScript functions can do different things each time they are called. JavaScript functions both allow you to specify parameters that allow different values to be passed into a function as well ... Read More

HTML and XHTML cannot use the same JavaScript code. The Document Object Model that JavaScript uses to access an HTML web page is not identical to the one it needs to ... Read More

Unlike many other languages JavaScript is loosely typed which means that it is easy to convert from one type of data to another. All data in a program has an associated ... Read More

JavaScript allows you to match content when that content is followed by something specific The seventeenth tutorial on "Regular Expressions" looks at how JavaScript supports the "lookahead" functionality which allows you ... Read More

JavaScript animations can enhance a personal web site.Here is a variation of the follow the mouse script that works a bit differently. With this JavaScript, instead of having one object ... Read More

One JavaScript effect is not always enough Adding one JavaScript image gallery to a web page is relatively easy. Adding multiple image galleries to the same web page is not much ... Read More

Animate advertising on your page and get it noticed.Get your advertising noticed without annoying visitors too much with this scrolling ad script. Your ad scrolls backwards and forwards across the ... Read More

In JavaScript all functions are methods The difference between a function and a method in JavaScript is mostly a matter of terminology. If you are using a procedural approach you will ... Read More

A lot more content can be fit into a small area if your page contains several tabs to select what to display when The tabbed approach to web page design is ... Read More

Scrollbars allow your visitor to scroll the page The question you might be asking is just how far has the page been scrolled. In this twelfth tutorial on the Browser Object ... Read More

You don't have to capture groups in Regular Expressions unless you need to refer back to them There are a number of different reasons for using groups in Regular Expressions. The ... Read More

While you need a server side language to read posted values, you can use JavaScript to write them. You are probably aware that you can use either "get" or "post" when ... Read More

The way you code your JavaScript can affect the speed it runs at Unlike many other programming languages, JavaScript is interpreted and not compiled. This means that each statement is interpreted ... Read More

You can use functions in JavaScript When you first start writing programs in any language there is a lot of terminology and functionality that may not be all that obvious to ... Read More

There is more than one way to code your script tag to be unobtrusive In the examples so far in the "Learn Modern JavaScript" series I have shown the script tag ... Read More

Most cross browser issues are due to the differences between the way that JavaScript and JScript work Unlike other web browsers Internet Explorer does not run JavaScript. Instead they support a ... Read More

Now where did that mouse go? In this eleventh tutorial on the Browser Object Model we look at the way that different browsers supply information to JavaScript on just where in ... Read More

JavaScript regular expressions can match parts of a string to one another The fifteenth tutorial on Regular Expressions introduces Back References - this is a way to refer back to a ... Read More

Javascript is good at substitution codes, are you? Have you thought of adding games to non-business web sites to make things more interactive for your visitors, here is a script that ... Read More

Use JavaScript to create a marquee that displays in all JavaScript enabled browsersMicrosoft provide a proprietary "marquee" tag for Internet Explorer to scroll the content across the screen. This is ... Read More

Is that a web page or a piece of paper in a typewriter? Here's an animation script that is a bit different. This one dynamically types the content of the page ... Read More

When coding JavaScript we don't care what browser it is. Browser sensing has never been required in JavaScript because JavaScript has always provided a simple way to determine whether the currently ... Read More

Some ideas sound useful when you first look at them but turn out to be nowhere near as useful as they appear At first glance the idea of converting the password ... Read More

Even where different browsers put information in different places we can still use feature sensing to retrieve it from where it is put Perhaps one of the most useful pieces of ... Read More