Page 400 - Web Applications (803) Class 11
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14. What are attributes?
Ans. Attributes are tag sub-elements or features that provide additional functionality by allowing a user to change
the marked-up elements in various ways.
15. What are external links?
Ans. External links are formed when you want to go to another page or URL by clicking on a link on a webpage.
16. What is CSS?
Ans. CSS is a method sheet language that gives web designers control over how their websites connect with web
browsers, including how their HTML documents are formatted and displayed.
17. What makes a CSS rule?
Ans. A selector and a declaration block make up a CSS rule.
18. What is a DSN?
Ans. The Domain Name System (DNS), which allows computers to communicate with one another and send email or
display Webpages, is at the heart of how the Internet works.
19. What is Multimedia?
Ans. Multimedia is a combination of the phrases multi (meaning many) and media (meaning information).
20. What is a filter in GIMP?
Ans. A filter is a unique tool made to accept an input layer or image, apply a mathematical procedure to it, and then
return the input layer or image in a modified format.
21. Define JavaScript.
Ans. JavaScript is an interpreted computer programming language that was first implemented as part of a web
browser.
22. How is JavaScript added to a web page?
Ans. JavaScript is typically embedded into an HTML document using the <script> tag.
23. What is a variable in JavaScript?
Ans. A JavaScript variable (also known as an identifier) is a storage location in the memory.
24. What is a constant in JavaScript?
Ans. A constant is a type of variable whose value cannot be modified while the program is running.
25. What is the use of typeof() method in JavaScript?
Ans. The typeof is a type checking operator in JavaScript that returns the data type of the operand passed to it.
26. What is the role of operator precedence and associativity in JavaScript?
Ans. Operator precedence and associative rules play a factor when an expression comprises a large number of
operators and operands and the sequence of evaluations is uncertain.
27. Explain the use of prompt() method.
Ans. The prompt( ) method asks the user to enter a value. It has two buttons, one for ‘Ok’ and one for ‘Cancel’.
28. Define confirm() method.
Ans. The confirm( ) method is used to obtain confirmation from the user about an action.
29. What is a block in JavaScript?
Ans. A block is a collection of statements that are joined together with braces to form a single statement.
30. What is the use of switch statement in JavaScript?
Ans. The switch statement is used to pick one of many code blocks to be performed.
398 Touchpad Web Applications-XI

