Javascript interview questions part 24
Javascript interview questions part 24
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Total Questions: 20
1. Which property in the Window object is used to refer to a Location object?
Correct Answer is : location
2. Which Window object method is used to display message in a dialog box?
Correct Answer is : alert()
3. The setTimeout() method is used to
Correct Answer is : Register a function to be invoked after a certain time
4. Which of the following is a global object?
Correct Answer is : Window
5. When will the window property come into play?
Correct Answer is : Refer to window object itself
6. Which is the property that represents the content displayed in the window?
Correct Answer is : document
7. How to pick a document element based on the value of its id attribute?
Correct Answer is : getElementbyId()
8. What are the properties supporting CSS styles for a document element?
Correct Answer is : style and className
9. Which of the following object belongs to the style property?
Correct Answer is : Element
10. What is the purpose of the event handlers in the JavaScript?
Correct Answer is : Allows JavaScript code to alter the behaviour of windows
11. When a program contains extensive use of event handlers, which of the following is necessary?
Correct Answer is : Nested functions
12. What is the code snippet to find all container elements with class “reveal”?
Correct Answer is : var elements = document.getElementsByClassName("reveal");
13. What is the code snippet to update the content of the timestamp element when the user clicks on it?
Correct Answer is : timestamp.onclick = function() { this.innerHTML = new Date().toString(); }
14. What is the purpose of minifying the JavaScript?
Correct Answer is : To streamline the visits
15. From which did Minification concept originate?
Correct Answer is : JavaScript interpreter
16. What is the purpose of the product Minify?
Correct Answer is : Proxies the JavaScript file
17. What does the Minify set the encoding HTTP header?
Correct Answer is : both deflate and gzip
18. What is in-built in the Minify?
Correct Answer is : Static compression
19. Which folder contains the Minify control panel?
Correct Answer is : /min/builder/
20. Which of the following is the order of Minify process?
Correct Answer is : Read, Remove extraneous characters, gzip the response
