Category: improve

3 Common Issues With AJAX Technology

programmingAJAX technology is generally very impressive overall and certainly can make tasks easier across the internet. However, like any piece of technology, AJAX is also prone to its technical issues.

Here are three of the most common technical issues that AJAX experiences.

 

Issue One: The Content Isn’t Backwards Compatible

Many have found that this happens when a designer has used JavaScript and Ajax enhancements within the structure of their website without ensuring that provisions have been made for browsers that have moved to disable JavaScript.

While there’s nothing inherently wrong with a website that has JavaScript and Ajax, it should be reminded that not all browsers are going to be compatible. Thus, you’ll have to implement Ajax as one of the enhancements to a website that is already up and functioning.

Server side technology will ensure that the browser is backwards compatible and that everything shows up correctly on the website. This ensures that the content is already fully accessible before any of the Ajax enhancements layering over the top. While the content will show up with or without JavaScript being disabled or enabled, it will show up more easily if it’s enabled and if the proper extensions are being utilized within the website.

Issue Two: The Loading Indicator Isn’t Triggered Via The Ajax Requests

Nearly every browser visually indicates to the user that the content is in the process of loading. The more current the browser, the more likely the indicator will show up on the tab that it’s in the process of loading.

There are a few easy workarounds for this. The first is to use a custom progress indicator in the Ajax request. Many websites offer free indicators for Ajax loading of the graphics.

You can incorporate the right code into your line that will show you the process of the request as it is in progress. Your code will allow you to follow your progress. When you use the JavaScript, you can also use the animated graphics that let you follow the progress. When you’re done, you can “hide” this, or you can hide it and work on something else until it’s complete.

Issue Three: The User Can’t Tell That The Ajax Request Has Finished

While related to Issue 2, Issue 3 is slightly different in that it’s often overlooked as a developer may assume that the absence of a “loading indicator” means that the content is complete. This may not be the case.

The easiest solution to this issue is to use a “request complete” message to the user. Similar in showing that a submission has been submitted, this link will show up on the top of a page and indicate that the request is complete. Digg has a program similar to this that means that a submission has been received.

It could be a success box or something else that designates that it’s been completed and the form has finished loading. There are a variety of ways that this can be accomplished to show that content is loaded or updated. A yellow fade technique is ideal or any other colour that would stand out from the rest of the script.

Occasionally, people will contact an IT support desk for help with faulty AJAX web page scripts. One, in particular, is Fluent Technologies Ltd, whose IT Support desk have implemented a number of fixes regarding AJAX issues.

All that being said, AJAX is a great technology and for the most part, works very well across the board. Platforms like Twitter that require information to be updated automatically without a page refresh, for example, rely on AJAX to do this and it’s obvious that it does this very well. However, there can always be some issues when working with any kind of technology, no matter how great it is.

If you’re wanting to learn AJAX yourself, here’s a great tutorial for beginners from LearnToProgram.