Let’s say, we have a series of strings, which contain and image path and order #concatenated. They look like this −const images = [    'photo1.jpg, 0',    'photo2.jpg, 2',    'photo3.jpg, 1' ];Therefore, the correct order should be − photo1, photo3, photo2. What we need to do is process ... Read More

Let’s say, we have two arrays of objects that contain information about some products of a company −const first = [    {       id: "57e7a1cd6a3f3669dc03db58",       quantity:3    },    {       id: "57e77b06e0566d496b51fed5",       quantity:3    },    {   ... Read More

Let’s say, we have an array of objects that contains information about some random transactions carried out by some people −const transactions = [{    name: 'Rakesh',    amount: 1500 }, {       name: 'Rajesh',       amount: 1200 }, {       name: 'Ramesh',   ... Read More

Let’s say, we have an array of Numbers that contains 0 and 1 −const arr = [0, 1, 0, 1];We are required to write an Array function, toBinary() that returns the corresponding binary for the array it is used with.For example − If the array is −const arr = [1, ... Read More

We have an array of arrays of Numbers like this one −const arr = [    [12, 56, 34, 88],    [65, 66, 32, 98],    [43, 87, 65, 43],    [32, 98, 76, 83],    [65, 89, 32, 54], ];We are required to write a function that maps over ... Read More

Let’s say, we have an array of numbers −const arr = [3, 5, 7, 8, 3, 5, 7, 4, 2, 8, 4, 2, 1];We are required to write a function that returns an array with the average of the corresponding element and its predecessor. For the first element, as there ... Read More

We have to write a JavaScript function, say extract() that extracts properties from an object to another object and then deletes them from the original object.For example −If obj1 and obj2 are two objects, thenobj1 = {color:"red", age:"23", name:"cindy"} obj2 = extract(obj1, ["color", "name"])After passing through the extract function, they ... Read More

We are required to write a function that returns true if the string in the first element of the array contains all of the letters of the string in the second element of the array.For example, ["hello", "Hello"], should return true because all of the letters in the second string ... Read More

Let’s say, we have an array of objects like this −const arr = [    {"name1": "firstString"},    {"name2": "secondString"},    {"name3": "thirdString"},    {"name4": "fourthString"},    {"name5": "fifthString"},    {"name6": "sixthString"}, ];We are required to write a function that takes one such array of objects and returns an object ... Read More

Let’s say, we have to write a function remove Nth that takes in an array and a number n and it removes every nth element of the array in place.This can be done using the Array.prototype.splice() method and here is the code for doing so −Exampleconst arr = ['T', 'h', ... Read More