cross-posted from: https://lemmy.world/post/10094818

spoiler

Gender variability as declarations in JavaScript: const / let / var

Meme is based on Jordan Peterson “approival / disapproval” format, him being a conservative who disapproves of gender fluidity.

Transcript:

  • Jordan Peterson approval image: const gender;
  • Jordan Peterson angry image: let gender;
  • Jordan Peterson crying image: var gender;
  • andrew@lemmy.stuart.funEnglish
    0·
    11 months ago

    var isn’t global unless it’s not inside a function. var is just function scoped, with declaration auto hoisted to the beginning of the function. let is a little more intuitive since you can’t refer to it before it’s been declared and has block scope rather than function scope.

      • andrew@lemmy.stuart.funEnglish
        0·
        11 months ago
        var a;
(function() {
  a='hoisted';
  console.log(a);
  var a;
})()
console.log(a);

        Should log hoisted and then undefined, showing that you’ve assigned to the later-declared var a which was hoisted vs the external global a.