Cron-J Senior Front end Developer Interview Questions and Answers

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

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