UPDATE: the real purpose of this question is to find a FAST solution, I'm new to MongoDB so I thought it's fast if use a single query, however, any fast solution is okay. Basically I'm looking for a solution to…
From the docs I've been reading, the following ought to create an Array from the keys of a Map: var m = new Map(); m.set("a", 1); m.set("b", 2); var arr1 = Array.from(m.keys()); var arr2 = Array.from(m.values()); console.log(arr1.length); console.log(arr2.length); I'd expect…
I am using Javascript to make a game for a school assingment. I am making a game based on Wordle and so I am trying to change the color of cells in a 2d array. I am using document.querySelector to…
I try to create a "keyed" array, where items can be accessed by the index (like a regular array) and a .key property defined in the item object. The problem(s): I have concern about the consistency Array methods can be…
I have the following relTotal array. const relTotal = [[11111,15 / 05 / 2024,11:11hs,teste de a3,admin], [12541,03 / 06 / 2024,11:28hs,teste de a3,admin], [151515,22 / 03 / 2024,15:15hs,testes,testetes], [151515,22 / 05 / 2024,15:15hs,testes,testetes]] The Date field is formatted as "dd…
I need to write a function that returns an array of objects. The function will select the winners based on two factors: how much they paid, and their seat number. If both of these numbers are odd, the attendee wins…
I have been testing two methods of array creation and initialization in JavaScript using Node.js. One method involves dynamically pushing elements into the array, while the other method involves pre-allocating the array to a specific size and then setting each…
Let's suppose a collection has N documents and each document has an array field with M subdocuments. For a query that uses a $elemMatch on the field with the M subdocuments to filter and findMany documents of this collection, would…
const users = { user1: 18273, user2: 92833, user3: 90315 } //Answer const usersArray = Object.entries(users).map((keys, value)=> {return keys[0] + ' ' + value[1]}); console.log(usersArray); //OUTPUT: ['user1 undefined', 'user2 undefined', 'user3 undefined'] I expect it to be like this: […
I’ve got an array of objects that each carry a columnSpan property with a numeric value between 1 and 16. [ { "columnSpan": 4, "id": "DatoCmsEntry-MaixsOYtSwS7mloD59Rvng" }, { "columnSpan": 4, "id": "DatoCmsEntry-fEuNly9-QFiRh4DoUZ-Y_w" }, { "columnSpan": 2, "id": "DatoCmsEntry-HsAgXDMHQkSXS_4lKSGfGA" }, {…