JavaScript for Web Design – Pros and cons

22nd
May
2017

This article talks about the good and the bad points of using JavaScript in your website designs. It points away the areas where JavaScript excels as an internet centered programming language and also describes situations where its use can actually deter from the performance of any website.

First of all, JavaScript is a internet browser based programming language that actually runs client side. This means that any code that you write in JavaScript is provided along with your webpages and the scripts that you write actually run from the inside the users’ internet browser rather than directly on the server that is serving the web page. There are situations where JavaScript is a fantastic solution for implementing neat features in a web design but there are also situations where using JavaScript can hurt your websites performance. It is my aim in this article to describe the right way to use JavaScript and how to circumnavigate the downsides of using this versatile and powerful scripting language.

JavaScript for Web site design – The Positive aspects

JavaScript is a great solution to implement when validating input forms on the client side. This means that if the user does not remember to enter his name in a form for example a JavaScript validation function can popup a concept to let him learn about the omission. This is a far better solution that having a server based affirmation routine handle the error because the server will not have to do any additional processing. An asp or php program could be written to achieve the same job however the JavaScript would not allow the form to be submitted unless it was completed properly in the first place, a much more robust solution!

Another area where JavaScript excels is in the creation of dynamic results such as rollover images and scripted slideshows, where its use has become commonplace. Because JavaScript operates inside the clients browser it can be used to change the appearance of the users screen after the page has been delivered by the server. This allows it to create some very impressive dynamic image effects.

JavaScript for Web Design – Typically the Down sides

One of the major draw backs to using JavaScript is that it tends to severely bloat web pages. JavaScript code can quickly add up to hundreds of lines of code if you are using it to do anything even remotely interesting. That said the condition of large pieces of JavaScript code is easily solved by storing the JavaScript code off into separate JavaScript source documents which have a. js file format. This cleans up your web site code because the JavaScript code is stored separately to the CODE page itself, leaving a much cleaner and more readable web page.

Due to JavaScript’s tendency to bloat web pages it can be very bad for the search engine friendliness of your on line site. This is because when a search engine gets to your site looking for quality content and keywords to find out what your page is al about, the last thing it wants to see is hundreds of lines of JavaScript code. Again, this problem is easily solves by neatly storing JavaScript code away in screenplay files with a. js extension and linking to the script file in your HTML documents.

Bottom line:

JavaScript is a feature rich and useful web browser based script that if used properly can achieve some great effects and enhance the experience for the finish user. There are downsides to its use in that it tends to bloat web pages. The key thing to remember is to get the best of both worlds by using JavaScript code in outside script files. That way the code is divided from your content so you get all the benefit for JavaScript functionality but without the adverse outcomes of the associated computer code bloating.

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