Javascript interview questions part 27
Javascript interview questions part 27
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Total Questions: 20
1. What is the vulnerability of XHR communications?
Correct Answer is : Registration and Skewing the results
2. Which of the following methods adds and connects the point to the cubic bezier curve?
Correct Answer is : bezierCurveTo()
3. Which of the following methods adds an arc to the current subpath?
Correct Answer is : arc()
4. How does PhantonJS use YSlow?
Correct Answer is : Command Line Script
5. What are the two output formats YSlow uses?
Correct Answer is : TAP, JUnit
6. Initially, YSlow was an extension of which browser?
Correct Answer is : Firefox
7. Which of the following can be used for a deeper analysis of the web page’s performance?
Correct Answer is : YSlow
8. How many rules are there in the YSlow version 2.0?
Correct Answer is : 23
9. Which of the following is mandatory to run before running YSlow?
Correct Answer is : FireBug
10. How does the YSlow for Mobile work as?
Correct Answer is : Bookmarklet
11. Which network allows you to distribute static assets like images, etc?
Correct Answer is : Content Delivery Network
12. What are the three important manipulations done in a for loop on a loop variable?
Correct Answer is : Initialization,Testing, Updation
13. Consider the following code snippet let succ = function(x) x+1, yes = function() true, no = function() false; What convenience does the above code snippet provide?
Correct Answer is : Functional behaviour
14. When are the keyboard events fired?
Correct Answer is : When user clicks a key
15. How does a user generate multiple keydown events?
Correct Answer is : Pressing the key longer than usual
16. Which property is used to specify the key type when pressed?
Correct Answer is : keyCode
17. For what value does the keyCode property persists even when a Shift key is pressed for adding punctuation character.
Correct Answer is : Digits
18. Which of the following are not key event properties?
Correct Answer is : Code key
19. Which of the following key property holds the key name as a string?
Correct Answer is : key
20. Which of the following is not the value the key property will hold if the key is a function key?
Correct Answer is : Left
