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Internet Browsers and Add-ons Popular browsers What a browser does Javascript Add-ons Also see an explanation and examples of HTML code in Past Meeting.

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Presentation on theme: "Internet Browsers and Add-ons Popular browsers What a browser does Javascript Add-ons Also see an explanation and examples of HTML code in Past Meeting."— Presentation transcript:

1 Internet Browsers and Add-ons Popular browsers What a browser does Javascript Add-ons Also see an explanation and examples of HTML code in Past Meeting Notes for 2010_02

2 Popular Browsers Firefox – from Mozilla % Chrome – from Google % Internet Explorer – from Microsoft % Safari – from Apple % Opera – from Opera Software % Chrome and Firefox are as popular as IE

3 What does an Internet Browser do? 1. It goes to a computer at an address that you specify and retrieves a particular file of text  You provide the address, e.g. and the filename is often assumed, e.g. index.htmlwww.bbc.co.uk  The addressed computer is a Web Server 2. It displays the contents of this text file; this is a Web Page 3. It executes the embedded commands 4. Some common commands are:  Enhance the text, e.g. bold, italics  Display a picture  Give the user a place to select an alternative file to display, replacing the current one; this is a Hyperlink  Layout the text in a tabular arrangement

4 What does an Internet Browser do? Some more sophisticated commands are: 1.Open a box for text input 2.Listen for spoken input and convert to text 3.Open and close subsections or bullet points 4.Execute a Javascript program Javascript can be used for: “Transmitting information about the user's reading habits and browsing activities to various websites. Web pages frequently do this for,, or other purposes.”

5 Browser Add-ons These are small programs that you choose to install inside your browser (therefore making it bigger)  Similar to Apps on smartphones They add useful automation to some of the interactive work you do with a browser, e.g. shopping For example:  Fill in a form with your name & address  Check your spelling  Translate from a foreign language  Provide control over Javascript programs

6 Some useful add-ons Internet Explorer When first installed it has several ‘add-ons’! which you can’t remove! Google Toolbar Browse to: toolbar.google.com (this takes you to: For other add-ons go to the menu ( ) and select ‘Manage add-ons’ Firefox  Autofill Forms  British English Dictionary  ImTranslator  NoScript Go to 'Tools/Add-ons' and Search for the above

7 Advice from the internet ddons.htm ddons.htm vista/How-do-browser-add-ons-affect-my-computer vista/How-do-browser-add-ons-affect-my-computer


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