Q1.

Image for post

Output

welcome
hello

Explanation

var is function scoped, therefore, when msg is declared inside the if block, it overrides the msg in the global scope. This does not happen with let as it is block scoped.

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10 JavaScript Interview Questions

10 JavaScript Interesting Questions, Output & Explanation. What is JavaScript? Enumerate the differences between Java and JavaScript? What are JavaScript Data Types? What is the use of isNaN function? Between JavaScript and an ASP script, which is faster? What is negative infinity? Is it possible to break JavaScript Code into several lines? Which company developed JavaScript?

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