Introduction

JavaScript is a scripting language used in many websites. A scripting language is interpreted in run-time. It is not compiled like other languages as C++, C#, VB.NET etc. JavaScript is a client side language and it runs on the client browser. Netscape developed it and because of its simplicity it is one of the most known scripting languages. However JavaScript can be also used on the server-side. JavaScript can be used on all most known browsers. It can be easily used to interact with HTML elements. You can validate text fields, disable buttons, validate forms, or change the background color of your page. All this is possible with JavaScript. Like each programming language, it contains variables, arrays, functions, operators, objects and much more which can help you to create better scripts for your pages. On the server side you can use JavaScript for example to manage your database entry. JavaScript code can be inserted directly in the HTML or you can place it in a separate file with the .js extension and link the web page with the .js file.

How do I turn on Javascript?

Here’s how to enable JavaScript in Internet Explorer, Firefox and Safari.

Internet Explorer 6.X and lower:

Click the Tools menu along the top of the Explorer window.
Click Internet Options.
From the tabs along the top, click Security.
In the first box, Web content “Zone”, click Internet.
In the next box, “Security level for this zone”, click Custom Level.
In the window that opens, scroll down to the “Scripting” section, and under “Active scripting”, select “Enable”.
Click OK, then OK again. Exit and re-open the browser. Ready!

Internet Explorer 7:

Click the Tools menu along the top of the Explorer window.
Click Internet Options.
From the tabs along the top, click Advanced.
In the window that opens, scroll down about half way. Look for a coffee-cup symbol. Enable JavaScript!
Click OK, then OK again. Exit and re-open the browser. Ready!

Firefox:

Click the Tools menu along the top of the Firefox window.
Click Options.
From the icons along the top, click Content.
In the first section, put checks beside “Enable Java” and “Enable JavaScript”.
Click OK, then exit and re-open Firefox. Ready!

Safari:

From the Safari menu, click Security.
Check the boxes for “Use Plug-Ins”, “Java” and “JavaScript”. Done!