What is the output of the following? “`js let x = 1; function foo(x, y = x * 2) { return y; } console.log(foo(3)); “`

Question

JavaScript Developer — Hard

What is the output of the following? “`js let x = 1; function foo(x, y = x * 2) { return y; } console.log(foo(3)); “`

Accepted Answer

The output of the code is 6. The function `foo` takes two parameters, `x` and `y`, with a default value of `x * 2`. When `foo(3)` is called, `x` is 3, so `y` is calculated as 3 * 2, which equals 6.