AmitDiwan has Published 10740 Articles

Implementing Math function and return m^n in JavaScript

AmitDiwan

AmitDiwan

Updated on 23-Nov-2020 06:32:14

215 Views

We are required to write a JavaScript function that takes in two numbers say m and n. Then function should calculate and return m^n.For example − For m = 4, n = 3, thenpower(4, 3) = 4^3 = 4 * 4 * 4 = 64 power(6, 3) = 216The code ... Read More

JavaScript: compare array element properties, and if identical, combine

AmitDiwan

AmitDiwan

Updated on 23-Nov-2020 06:29:29

110 Views

Suppose, we have an array of objects that contains information about some data storage devices like this −const drives = [    {size:"900GB", count:3},    {size:"900GB", count:100},    {size:"1200GB", count:5},    {size:"900GB", count:1} ];Notice like how the same size comes multiple times.We are required to write a function that takes ... Read More

Subtracting array in JavaScript Delete all those elements from the first array that are also included in the second array

AmitDiwan

AmitDiwan

Updated on 23-Nov-2020 06:28:05

174 Views

Suppose, we have two arrays of literals like this −const arr1 = ['uno', 'dos', 'tres', 'cuatro']; const arr2 = ['dos', 'cuatro'];We are required to write a JavaScript function that takes in two such arrays and delete all those elements from the first array that are also included in the second ... Read More

Best way to flatten an object with array properties into one array JavaScript

AmitDiwan

AmitDiwan

Updated on 23-Nov-2020 06:26:15

796 Views

Suppose, we have an object of arrays like this −const obj = {    arr_a: [9, 3, 2],    arr_b: [1, 5, 0],    arr_c: [7, 18] };We are required to write a JavaScript function that takes in one such object of arrays. The function should construct an flattened and ... Read More

Construct objects from joining two strings JavaScript

AmitDiwan

AmitDiwan

Updated on 23-Nov-2020 06:25:04

343 Views

We are required to write a JavaScript function that takes in two comma separated strings. The first string is the key string and the second string is the value string, the number of elements (commas) in both the strings will always be the same.Our function should construct an object based ... Read More

Convert 2d tabular data entries into an array of objects in JavaScript

AmitDiwan

AmitDiwan

Updated on 23-Nov-2020 06:23:50

197 Views

Suppose, we have an array of arrays like this −const arr = [    ["Ashley", "2017-01-10", 80],    ["Ashley", "2017-02-10", 75],    ["Ashley", "2017-03-10", 85],     ["Clara", "2017-01-10", 90],    ["Clara", "2017-02-10", 82] ];We are required to write a JavaScript function that takes in one such array as the ... Read More

Filtering array within a limit JavaScript

AmitDiwan

AmitDiwan

Updated on 23-Nov-2020 06:21:52

752 Views

We are required to write a JavaScript function that takes in an array of numbers as the first argument and an upper limit and lower limit number as second and third argument respectively. Our function should filter the array and return a new array that contains elements between the range ... Read More

Map multiple properties in array of objects to the same array JavaScript

AmitDiwan

AmitDiwan

Updated on 23-Nov-2020 06:20:29

1K+ Views

Suppose, we have an array of objects like this −const arr = [    {a: 1, b: 2},    {a: 3, b: 4},    {a: 5, b: 6} ];We are required to write a JavaScript function that takes in one such array of objects. The function should then map this ... Read More

How to sort a JavaScript object list based on a property when the property is not consistent

AmitDiwan

AmitDiwan

Updated on 23-Nov-2020 06:19:17

135 Views

We have an array that contains various objects. A few objects on this array have a date field (which basically is returned as a string from the server, not a date object), while for others this field is null.The requirement is that we have to display objects without date at ... Read More

Count number of entries in an object having specific values in multiple keys JavaScript

AmitDiwan

AmitDiwan

Updated on 23-Nov-2020 06:17:46

322 Views

Suppose, we have an array of objects like this −const arr = [    {"goods":"Wheat ", "from":"GHANA", "to":"AUSTRALIA"},    {"goods":"Wheat", "from":"USA", "to":"INDIA"},    {"goods":"Wheat", "from":"SINGAPORE", "to":"MALAYSIA"},    {"goods":"Wheat", "from":"USA", "to":"INDIA"}, ];We are required to write a JavaScript function that takes in one such array. The goal of function is to ... Read More

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