What will be the output of the following code snippet?

<script type="text/javascript" language="javascript">

var a = "Scaler";

var result = a.substring(2, 4);

document.write(result);

</script>

What will be the output of the following code snippet?

<script type="text/javascript" language="javascript">

var x=12;

var y=8;

var res=eval("x+y");

document.write(res);

</script>

What will be the output of the following code snippet?

(function(){

setTimeout(()=> console.log(1),2000);

console.log(2);

setTimeout(()=> console.log(3),0);

console.log(4); })();

What will be the output of the following code snippet?

(function(a){

return (function(){

console.log(a);

a = 6; })() })(21);

What will be the output of the following code snippet?

function solve(arr, rotations){

if(rotations == 0) return arr;

for(let i = 0; i < rotations; i++){

let element = arr.pop();

arr.unshift(element); }

return arr; }

// solve([44, 1, 22, 111], 5);

What will be the output for the following code snippet?

<p id="example"></p>

<script>

function Func() { document.getElementById("example").innerHTML=Math.sqrt(81); } </script>

What will be the output of the following code snippet?

var a = 1;

var b = 0;

while (a <= 3) {

a++; b += a * 2;

print(b); }

What will be the output of the following code snippet?

var a = Math.max();

var b = Math.min();

print(a);

print(b);

What will be the output of the following code snippet?

var a = Math.max() < Math.min();

var b = Math.max() > Math.min();

print(a);

print(b);

What will be the output of the following code snippet?

var a = true + true + true * 3;

print(a)

What is the output of the following code snippet?

print(NaN === NaN);

What will be the output of the following code snippet?

print(typeof(NaN));

What will be the output of the following code snippet?

const obj1 = {Name: "Hello", Age: 16};

const obj2 = {Name: "Hello", Age: 16};

print(obj1 === obj2);

What will be the output of the following code snippet?

let n = 24; let l = 0, r = 100, ans = n;

while(l <= r) {

let mid = Math.floor((l + r) / 2);

if(mid * mid <= n) {

ans = mid; l = mid + 1; }

else { r = mid - 1; } }

print(ans);

What will be the output of the following code snippet?

let s = "00000001111111"; let l = 0, r = s.length - 1, ans = -1;

while(l <= r) {

var mid = Math.floor((l + r) / 2);

if(s[mid] == '1') {

ans = mid; r = mid - 1; }

else { l = mid + 1; } }

print(ans);

What will be the output of the following code snippet?

let a = [1, 2, 3, 4, 5, 6]; var left = 0, right = 5; var found = false; var target = 5; while(left <= right) {

var mid = Math.floor((left + right) / 2);

if(a[mid] == target) {

found = true; break; }

else if(a[mid] < target) {

left = mid + 1; }

else { right = mid - 1; } }

if(found) { print("YES"); }

else { print("NO"); }

The 3 basic object attributes in Javascript are:

When an operator’s value is NULL, the typeof returned by the unary operator is:

How can a datatype be declared to be a constant type?