Basic javascript

Asked to give output of all these and explanation of all outputs const b = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]; for (let i = 0; i < 10; i++) { setTimeout(() => console.log(b[i]), 1000); } for (var i = 0; i < 10; i++) { setTimeout(() => console.log(b[i]), 1000); } var x = 23; (function(){ x++; console.log(x); var x = 43; (function random(){ x++; console.log(x); var x = 21; })(); })(); function fun1(){ setTimeout(()=>{ console.log(x); console.log(y); }) var x=2; let y=12; } fun1()