JSFiddle - React, Tailwind, and code Playground
JavaScript
function fvar() {
b = 2;
if (true) {
var a = 1;
var b;
b++;
}
console.log(a, b);
}
function flet() {
if (true) {
let a = 1;
}
console.log(a);
}
fvar();
flet();