Javascript interview questions part 31
Javascript interview questions part 31
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Total Questions: 20
1. Which is the property that is triggered in response to JavaScript errors?
Correct Answer is : onerror
2. Which event can be fired on any scrollable document element?
Correct Answer is : Scroll
3. How many node types are there in total?
Correct Answer is : 12
4. What is the purpose of the Node object property ownerDocument?
Correct Answer is : Returns the root element
5. Which of the following Node object property returns the local part of the name of a node?
Correct Answer is : localName
6. What is the property textContent?
Correct Answer is : Sets & Returns the textual content of a node
7. How many Node object methods are available?
Correct Answer is : 18
8. Which of the following Node object property returns the node immediately before a node?
Correct Answer is : previousSibling
9. What is the purpose of the method getUserData(key)?
Correct Answer is : Returns the associated object
10. How to test if two nodes are equal?
Correct Answer is : isEqualNode()
11. How to associate an object to a key on a node?
Correct Answer is : setUserData(key,data,handler)
12. Which method is used to compare the placement of two nodes in the DOM hierarchy (document)?
Correct Answer is : compareDocumentPosition()
13. What does a Node object represent?
Correct Answer is : Single node
14. What does the nodeName of the nodeType Document return?
Correct Answer is : #document
15. What is the purpose of the method item()?
Correct Answer is : Returns node at specified index
16. How can the nodes in the node list be accessed?
Correct Answer is : Index number
17. Which of the following is the child(s) of the node type EntityReference?
Correct Answer is : Both Element and Text
18. Which node type represents the root-node of the DOM tree?
Correct Answer is : Document
19. What is the purpose of the DocumentFragment node type?
Correct Answer is : To hold a portion of a document
20. How many nodetype – named constants are available?
Correct Answer is : 12
