Web design for professional websites like Go LES Liverpool becomes more effective when content featured on the site is unique, fresh, useful and optimized for search engines. Content is very important for websites because it is one of the best tools essential to online marketing. Websites of eye doctors that utilize high quality content are effective in attracting patients who would like to undergo the surgical procedure to improve their eyesight.

When JavaScript was first introduced in 1995 as a simple client-side scripting language for web browsers it became one of the most disliked programming languages because of its many design errors. Many users have chosen to disable their browser’s ability to run the JavaScript code. Today, JavaScript has become the most dominant programming language and it is the only one deployed in most personal computers and mobile devices all over the globe.

JavaScript has become a powerful, dynamic and fully functional object-oriented programming language that is at par with the more traditional programming languages that include C++, Ruby on Rails or Java. The advanced features of JavaScript include prototypal inheritance, modules, namespace, anonymous functions and meta-programming. Examples of applications that use JavaScript include Google mail and Google map.

Web developers prefer to use JavaScript because it is free and relatively easy to set up. On the client-side, JavaScript comes with the browser and it does not have to be downloaded, installed and configured on any of the library files for it to run. All that JavaScript needs on the client-side are the program code editor and the internet browser. All popular browsers allow you to debug the JavaScript code. It includes free and excellent online tools that allow you to look into the JavaScript code and its execution environment. This will allow the user to write and store the values of the variables at various execution stages of the program.

JavaScript tools include Firebug and Web Developer Toolbar. Firebug is the plugin for the Firefox browser while Web Developer Toolbar is available for both Chrome and Firefox. These tools will help you debug Javascript and also to examine the HTML and CSS code of the webpage. The codes can be modified in real time and it will take effect immediately.