Question

What's the output?

var num = 8;
var num = 10;

console.log(num);

• A: 8
• B: 10
• C: SyntaxError
• D: ReferenceError

Answer 1

Answer: B

With the var keyword, you can declare multiple variables with the same name. The variable will then hold the latest value.

You cannot do this with let or const since they're block-scoped and therefore can't be redeclared.