Javascript interview questions part 25
Javascript interview questions part 25
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Total Questions: 20
1. YUI Compressor is analogous to
Correct Answer is : Minify
2. What type of file is YUI Compressor?
Correct Answer is : JAR file
3. What is the function of a Closure Compiler?
Correct Answer is : Rewrites JavaScript
4. What is scorched-earth optimizations?
Correct Answer is : They strip out everything including best practices
5. The Closure Compiler was introduced by ___________
Correct Answer is : Google
6. What does the Minify return back to the Script tag?
Correct Answer is : Gzip encoded
7. What is the return type of the script tag?
Correct Answer is : HTTP Request
8. What does the JS File return?
Correct Answer is : Minify JavaScript
9. What is the outcome of using R along with minification?
Correct Answer is : Sheer file size reduction
10. Which one of the following is more efficient in terms of the file size reduction?
Correct Answer is : Closure Compiler (advanced)
11. Which of the following are JavaScript optimizers?
Correct Answer is : Both JSMin and Packer
12. Which of the following is the approach used to compress HTML in web servers and modern web browsers?
Correct Answer is : Content encoding
13. Which is the game that requires extremely minified source in the Perl culture?
Correct Answer is : Perl golf
14. The Crockford’s subset does not include which function in JavaScript?
Correct Answer is : eval()
15. What does javascript use instead of == and !=?
Correct Answer is : It uses === and !== instead
16. What is being imposed on each subset to ensure that it conforms to the subset?
Correct Answer is : A static verifier that parses code
17. Why was “The Good Parts” designed as a language subset in JavaScript?
Correct Answer is : To improve programmer productivity
18. Which is the subset that is a secure container designed for the purpose of safely running untrusted JavaScript?
Correct Answer is : Sandbox
19. Why is this keyword not preferred in JavaScript?
Correct Answer is : Functions should not access the global objects
20. Which are the two functions that are not allowed in any secure subset?
Correct Answer is : eval() and the Function() constructor
