javascript - function definitions not hoisted

Question

W.r.t Hoisting of fxn definitions.

if (true) {
  function foo() {
    alert(1)
  }
} else {
  function foo() {
    alert(2)
  }
}
foo()

Answer 1

The code you have is invalid in strict mode. Functions don't get hoisted out of blocks (or at least they shouldn't), function declarations inside blocks were completely illegal until ES6. You should write

"use strict";
var foo;
if (true) {
  foo = function() {
    alert(1)
  };
} else {
  foo = function() {
    alert(2)
  };
}
foo()

to get the desired behaviour with reproducible and expected results.

Did I miss something or, did console stop hoisting on fxn's!

Looks like V8 was updated to align with the ES6 spec. It does "hoist" them to the function/top scope, but only when the declaration is actually encountered (in your case, conditionally).