When should I use var, let, or const in JavaScript?

Can you explain when to use var, let, and const in JavaScript?

Sure! In JavaScript, use 'var' for function-scoped variables, 'let' for block-scoped variables, and 'const' for constants.

What are the differences between var and let?

'var' is function-scoped and can be redeclared, while 'let' is block-scoped and cannot be redeclared in the same block.

Is it a good practice to use var?

It's generally recommended to avoid 'var' in favor of 'let' and 'const' for better scoping and to prevent hoisting issues.

When should I use const instead of let?

Use 'const' when you want to declare a variable that won't be reassigned, ensuring its value remains constant.