Suppose, we have a nested array like this −const arr = ['zero', ['one', 'two' , 'three', ['four', ['five', 'six', ['seven']]]]];We are required to write a JavaScript function that takes in a nested array. Our function should then return a string that contains all the array elements joined by a semicolon ... Read More

Suppose, we have an array of objects like this −const arr = [    { id : "23", name : "Item 1", isActive : true},    { id : "25", name : "Item 2", isActive : false},    { id : "26", name : "Item 3", isActive : false},   ... Read More

We are required to write a JavaScript function that takes in an array of literal values as the first argument and a string as the second argument.Our function should sort the array alphabetically but keeping the string provided as the second argument (if it exists in the array) as the ... Read More

Suppose, we have two child and parent JSON arrays of objects like these −const child = [{    id: 1,    name: 'somename',    parent: {       id: 2    }, }, {    id: 2,    name: 'some child name',    parent: {       id: ... Read More

Suppose we have a sorted array of numbers like this where we can have consecutive numbers.const arr = [1, 2, 3, 5, 7, 8, 9, 11];We are required to write a JavaScript function that takes one such array.Our function should form a sequence for this array. The sequence should be ... Read More

Suppose, we have an array of objects like this −const arr = [    {"Date":"2014", "Amount1":90, "Amount2":800},    {"Date":"2015", "Amount1":110, "Amount2":300},    {"Date":"2016", "Amount1":3000, "Amount2":500} ];We are required to write a JavaScript function that takes in one such array and maps this array to another array that contains arrays instead ... Read More

Suppose, we have a comma-separated string like this −const str = "a, b, c, d , e";We are required to write a JavaScript function that takes in one such and sheds it off all the whitespaces it contains.Then our function should split the string to form an array of literals ... Read More

We are required to write a JavaScript function that takes in an array of literal values. The array might contain some repeating values inside it.Our function should remove all the repeating values keeping the first instance of repeating value in the array.ExampleThe code for this will be −const arr = ... Read More

Suppose we have two arrays of objects, the first of which contains some objects with user ids and user names.The array contains objects with user ids and user addresses.The array is −const arr1 = [    {"id":"123", "name":"name 1"},    {"id":"456", "name":"name 2"} ]; const arr2 = [    {"id":"123", ... Read More

We are required to write a JavaScript function that takes in an array of literal values. Our function should pick all those values from the array that appears exactly twice in the array and return a new array of those elements.ExampleThe code for this will be −const arr = [0, ... Read More