Question

What is the output of the following code snippet: if( 1 == 1){ var x = 6; } console.log(x); Select one:a) undefined b) Error c) 6d) 66

Answer 1

The correct answer is: a: undefined.

In JavaScript, variables declared with the var keyword have function scope, not block scope. In the code snippet provided, the variable x is declared and assigned the value 6 inside the if block. However, since the if block does not create a new function, the variable x is still in the same scope as the console.log(x) statement outside of the if block. However, the if statement is not executed because the condition 1 == 1 is always true. Therefore, the variable x is not defined before the console.log(x) statement, resulting in x being undefined when it is logged to the console.