What is the output of the following? “`js function foo(a, b = a * 2, c = a + b) { return [a, b, c]; } console.log(foo(3)); “`

Question

JavaScript Professional — Medium

What is the output of the following? “`js function foo(a, b = a * 2, c = a + b) { return [a, b, c]; } console.log(foo(3)); “`

Accepted Answer

The output of the function `foo(3)` is `[3, 6, 9]` because the default values for parameters `b` and `c` are calculated based on the input value of `a`.