JavaScript uses the Document Object Model to access and update the web page. Over the last few months our Sunday tutorials have been looking at Ajax where we retrieve information from ... Read More

Javascript isn't Java but you can use one to test if the other is supported You can use a short piece of Javascript code to check whether the browser has a ... Read More

JavaScript can't maintain the quality of an image if you resize it but it can allow the image to be dynamically resized. This simple Javascript allows your visitors to resize the ... Read More

JScript isn't JavaScript and Internet Explorer runs JScript not JavaScript In many ways JScript is a lot more powerful than Javascript since it can do many things that Javascript can't and ... Read More

You can let JavaScript make decisions by using Math.random The fourth tutorial in the web page animation series shows you how to position the object randomly on the screen and then ... Read More

Thyere is more than one way to write JavaScript Those who write their own JavaScript rather than just using someone else's script still do not necessarily need to write all the ... Read More

Different parts of the world expect dates in different formats. Different months contain different numbers of days. These two "problems" mean that the way that you offer for your visitors to ... Read More

Just how secure is Ajax? The fifteenth tutorial on Ajax looks at the security issues associated with using Ajax. An Ajax application can be just as secure as any other computer ... Read More

Javascript can help stop our pages appearing within someone else's page. Some web sites will embed your page into a page on their site via server side processing and then place ... Read More

When you attach an action with JavaScript you don't necessarily want the original action to be performed too. There are a number of objects on a web page that have their ... Read More

There is no way to stop any image you place on a web page from being stolen by anyone who really wants it because they will already have a copy ... Read More

There are some things that you want to keep visible on the page even when it is scrolled and some older browsers don't support position:fixed In this third tutorial on JavaScript ... Read More

Some old JavaScript put the event handlers right inside the HTML tags themselves In order to properly make our JavaScript unobtrusive it isn't enough to just move the content of script ... Read More

A common cause of scripts breaking when you add more than one to the same page is where each tries to assign something different to the onload event. The process of ... Read More

Many people misunderstand the real difference between GET and POST One problem with using GET requests with Ajax is that such requests were designed to retrieve static information. This means that ... Read More

Javascript can't end all wars or feed the starving millions While there are a great many things that Javascript can be used for to enhance your web pages and improve your ... Read More

Using a cookie, javascript can remember your preferences for the next time you visit a web page Set up a list of links to your own favourite web pages from this ... Read More

Going around in circles means your JavaScript never has to stop. Animate an object (for example an image or a block of text) by having it continually circling around the centre ... Read More

JavaScript can't update elements within the web page until they are loaded. The second animation tutorial looks at the simplest action that we can take now that we have defined a ... Read More

Only a watch company would try to reinvent time. Several years ago the people that make the Swatch came up with their own new method of time keeping that they call ... Read More

The International Standards Organisation have a rather unusual definition for working out week numbers. Not only do the week numbers that the ISO has defined assume the week runs from Monday ... Read More

You can submit a second Ajax request before the first returns provided you code it the right way. In all of the preceding Ajax tutorials we have looked at how to ... Read More

Do you know how web browsers really work when displaying pages? How do you stop people from copying things from your web page? Well there is no technical solution but all ... Read More

Password protection is best done on the server Javascript is not really suited to the application of password protection to a web page since it is easy for anyone to view ... Read More

The only file access in Javascript is to use cookies Start using cookies with your web pages quickly and easily with this collection of functions that handle everything for you. Cookie Toolbox

Learn how to add animation to your page with JavaScript In this tutorial series we will look at how to set up an animation effect on our web page using DHTML ... Read More

JavaScript can determine if your visitor's location uses daylight saving time. JavaScript does not directly have access to a flag indicating if your visitor is on daylight saving time or not ... Read More

The JavaScript Date Object is the best way to manipulate dates and times in the browser Not only doe the Date Object have a whole lot of built in functionality that ... Read More

Sometimes when waiting for an Ajax response the situation changes so that you no longer need it. Since Ajax is normally run asynchronously where we don't wait for the response to ... Read More

JavaScript can make writing HTML easier. If you write your HTML by hand or if your WYSIWYG editor doesn't have an option to generate a particular construct such as a calendar ... Read More

JavaScript can present your visitors with alternatives. Get your visitors started on performing an action by presenting them with a randomly selected idea related to that action. Of course some may ... Read More