Category Archives: Javascript Questions




Welcome to the Javascript Questions and answers Section of Tut2learn. This section provides constructive interview Q&A for preparation and evaluation of Javascript. This would help us to face Javascript interview without any major hurdle.



Javascript Interview Questions and Answers – Part6

51.  What is the difference between JavaScript and Jscript? Both JavaScript and Jscript are almost similar. JavaScript was developed by Netscape. Microsoft reverse engineered Javascript and called it JScript. 52.  Is JavaScript case sensitive? Yes! A function getElementById is not the same as getElementbyID. 53. What is the use of Push method in JavaScript? The

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Javascript Interview Questions and Answers – Part5

41. What is break and continue statements? Break statement exits from the current loop. Continue statement continues with next statement of the loop. 42. What are the two basic groups of dataypes in JavaScript? They are as – • Primitive • Reference types. Primitive types are number and Boolean data types. Reference types are more

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Javascript Interview Questions and Answers – Part4

31. What are all the types of Pop up boxes available in JavaScript? Alert Confirm and Prompt 32. What is the use of Void(0)? Void(0) is used to prevent the page from refreshing and parameter “zero” is passed while calling. Void(0) is used to call another method without refreshing the page. 33. How can a

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Javascript Interview Questions and Answers – Part3

21. Define the occurrence of negative infinity in JavaScript? Negative infinity is a special number which comes up when a negative number is divided by zero.  22. What are all the looping structures in JavaScript? Following are looping structures in Javascript: For While do-while loops 23. What is called Variable typing in Javascript? Variable typing

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Javascript Interview Questions and Answers – Part2

11. What are global variables? How are these variable declared and what are the problems associated with using them? Global variables are those that are available throughout the length of the code, that is, these have no scope. The var keyword is used to declare a local variable or object. If the var keyword is omitted,

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Javascript Interview Questions and Answers – Part1

1. What is JavaScript? JavaScript is a client-side scripting language that can be inserted into HTML pages and is understood by web browsers. 2. Enumerate the differences between Java and JavaScript? Java is a complete programming language. In contrast, JavaScript is a coded program that can be introduced to HTML pages. These two languages are

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