What is JavaScript?

• JavaScript is a scripting language
• A scripting language is a lightweight programming language
• JavaScript is lines of executable computer code
• JavaScript can be inserted into an HTML page
• JavaScript is an open scripting language that anyone can use without purchasing a license
• JavaScript is supported by all major browsers like Firefox and Internet Explorer.

JavaScript installation instructions

Microsoft Internet Explorer 5/6

The following instructions show how to check if your IE browser (for PC) has been set up with Javascript enabled. These instructions and screengrabs are based on Internet Explorer 6.

1. Go to the Tools options in the top toolbar and select internet options.
   
   
   
2. Click on the security tab at the top of the internet options box.
   
   
   
   
3. The default level settings for internet, local intranet and trusted sites should enable scripting. To check this select the required web content zone and click on the custom level button
   
4. In the security settings box check that scripting is enabled.
   
   
   
   
5. If any settings are changed, click on the apply button.
   
   
   
   
6. You may also need to click on the Refresh button in the top toolbar for javascript to be fully enabled on the page currently being viewed.
   
   

Microsoft Internet Explorer 7

1. In Internet Explorer 7 click on the 'tools' button, located in the upper right part of the screen (next to the gear icon) and select 'internet options' as shown on the picture.
   
   
   
   
2. Click on the 'security' tab and then click on the 'custom level...' button.
   
   
   
   
3. Scroll down until you can see options as shown on the picture. They are located near the bottom of the list. Set the option 'active scripting' to 'enable'. Then click on the 'OK' button.
   
   
   
   
4. Click 'Yes'.
   
   
   
   
5. Click 'OK'. This concludes enabling JavaScript for Microsoft Internet Explorer 7.
   
   
   
   
6. If the problematic web page (which did not work without JavaScript) is still opened inside Internet Explorer, simply press the 'F5' key on your keyboard to reload it. Now it should work correctly.