Chapter 2.4: Web 2.0

Question 1

What is the difference between the original web and web 2.0?

Answer 1

Original web:

• static pages
• written by site’s owners or administrators
• infrequently updated

web 2.0

• dynamic
• user generated content
• interactive
• participatory

Question 2

What technologies does web 2.0 rely on?

Answer 2

Javascript and Ajax

Question 3

What is Javascript?

Answer 3

it is a scripting language used in web design to write functions that enhance user interfaces and the dynamics of web pages

Question 4

What is Ajax?

Answer 4

stands for ‘asynchronous JavaScript and XML’

it is a set of new technologies, not a single technology that work together to retrieve data from servers asynchronously

new approach to designing web applications

Question 5

What is the advantage of Ajax over the original web?

Answer 5

Ajax allows users to update content on pages without leaving the page

Question 6

What is a widget? Examples?

Answer 6

It is a block of executable code that is installed within web pages

It is reusable, often written by 3rd parties and its content is live and dynamic

Examples:
on screen tools such as clock, stock market tickers and flight arrival schedules