Output Q4: var a = 1; → undefined

Question

What will be the output?

var a = 1;

function demo(){
console.log(a);
var a = 2;
}
demo();

Answer

Output: undefined

Function scope hoisting overrides outer scope variable access.

Key Points

This question tests your understanding of JavaScript internals and execution behavior. Interviewers often ask similar variations to evaluate debugging and reasoning skills.