AnkitMaheshwariIn

// program to find the factorial of a number
function findFactorial(num) {

    // if number is 0
    if (num === 0) {
        return 1
    } else {
	// if number is positive, 
	// multiply number with response of function findFactorial(num - 1), 
	// having argument one less than num

AnkitMaheshwariIn

// function to count down numbers to 1
function countDownFunc(number) {

    // display the number
    console.log(number);

    // decrease the number value by 1
    const newNumber = number - 1;

    // check condition, the countDownFunc will call itself till the value of newNumber becomes 0

AnkitMaheshwariIn

function recursiveFunction() {
    // other code..
    
    // calling itself, means calling recursive function
    // from within recursiveFunction
    recursiveFunction();
    
    // other code..
}

AnkitMaheshwariIn

/* RUN THIS CODE AND OPEN YOUR CONSOLE TO SEE THE OUTPUT */

// Code to search an item from an array using linear search

// declare a function which will take two arguments: array and itemToSearch
const doLinearSearch = (arr, itemToSearch) => {
	// iterate using for loop, where i is index and elem is each item
	for (const [i, elem] of arr.entries()) {
		if (elem === itemToSearch) {
			// return index, if elem matched with item to search

AnkitMaheshwariIn

/* RUN THIS CODE AND OPEN YOUR CONSOLE TO SEE THE OUTPUT */

// Code to delete last element from an array

// declare an array
arr = [10, 20, 30, 40, 50, 60]

console.log("To print elements before deletion")
for (i = 0; i < arr.length; i++) {
	console.log(`Element at index ${i} is ${arr[i]}`)

AnkitMaheshwariIn

/* RUN THIS CODE AND OPEN YOUR CONSOLE TO SEE THE OUTPUT */

// Code to delete first element from an array

// declare an array
arr = [10, 20, 30, 40, 50, 60]

console.log("To print elements before deletion")
for (i = 0; i < arr.length; i++) {
	console.log(`Element at index ${i} is ${arr[i]}`)

AnkitMaheshwariIn

/* RUN THIS CODE AND OPEN YOUR CONSOLE TO SEE THE OUTPUT */

// Code to delete element at a specific position from an array

// declare an array
arr = [10, 20, 30, 40, 50, 60]

console.log("To print elements before deletion")
for (i = 0; i < arr.length; i++) {
	console.log(`Element at index ${i} is ${arr[i]}`)

AnkitMaheshwariIn

/* RUN THIS CODE AND OPEN YOUR CONSOLE TO SEE THE OUTPUT */

// declare an array
arr = [10, 20, 30, 40, 50]

// travers an array
for (i = 0; i < arr.length; i++) {
	// travers means visiting each element once
	console.log(`Element at index ${i} is ${arr[i]}`)
}

AnkitMaheshwariIn

/* RUN THIS CODE AND OPEN YOUR CONSOLE TO SEE THE OUTPUT */
const print3dArray = (arr3d) => {
	console.log("I am in 3d array visualization")
	
	for (let i = 0; i< arr3d.length; i ++) {
		for (let k = 0; k< arr3d[i].length; k ++) {
			for (let m = 0; m< arr3d[i][k].length; m ++) {
				console.log(`value at i[${i}] k[${k}] m[${m}] is ${arr3d[i][k][m]}`)
			}
		}

AnkitMaheshwariIn

function fullName() {
  return "Hello, this is " + this.first + " " + this.last;
}

console.log(fullName()); // Output: Hello, this is undefined undefined

// create a person object and pass its values to the fullName function
var person = {first: "Foo", last: "Bar"};

// pass a person object to the fullName function using bind