Cron-J Senior Front end Developer Interview Questions and Answers

Q1. Differences between Var, Let and Const keywords in javascript
Ans. 
Var is function scoped, Let and Const are block scoped.
• Var can be redeclared and updated within its scope.

• Let can be updated but not redeclared within its scope.

• Const cannot be updated or redeclared within its scope.

• Let and Const are not hoisted like Var.

• Const must be initialized during declaration.
Answered by AI
Add your answer

We need to build a UI with some functionality, using a online React JS compiler. There'll be technical rounds as well

Q1. Difference between Let, Const and Var variable declarations in javascript
Ans. 
Let and const are block-scoped while var is function-scoped.
• let and const variables cannot be redeclared in the same scope

• let and var variables can be reassigned while const variables cannot

• var variables are hoisted to the top of their scope while let and const are not

• let and const variables are not accessible outside their block scope
Answered by AI
Add your answer

There'll be technical questions as well. Coding test is like they'll ask you to build a logic using online react js