Multidimensional input : update index when clone existing item

Is it possible to change the index of the last item of a multidimensional input when my new item is created ? Let me explain. I have a button that is clone an item from my list, into my list. Each …

I need to find a specific value in an array of arrays. Angular, Typescript

I need to find a value in an array of arrays, but when I use the .find it returns undefined import { Component, OnInit } from ‘@angular/core’; import * as XLSX from ‘xlsx’; import { ExcelSheetsService …

Convert Array in Map or 2D Array

So I basically have a gradebook that is a .csv file and is formatted like this name, grade name, grade I am looking for the best way to split my array so that I can access each independently but they …

Find Symmetric difference of multi-dimensional and a single-dimensional arrays

I need some help finding symmetric difference of a multi dimensional array, and a simple array. The first value in each inner array of the multidimensional array cells is the index that compares to …

Creating 2d array from section of other 2d array Javascript

I am trying to cut a section of a 2d array specified by x, y and w, h. an example of an array I’m trying to cut would be var arr = [ [‘0’, ‘1’, ‘d’, ‘a’, ‘1’, ‘1’], [‘0’, ‘s’, …

How to access the ith column of a Javascript Multidimensional Array?

For e.g if the array looks like this var example = [[2, “Dwayne”], [4, “Mark”], [8, “Jeff”]]; I want to get the 2nd value of each array inside example array e.g values …

Break array of objects into 2dimensional array

I need to break an array of objects into a 2-dimensional array where 1-dimensional arrays would consist of objects which have their attributes ‘for’ and ‘to’ being not overlapping intervals. Example: …

How to get the position information of a value of an array inside loop

I need to get the information of a position of an array inside the loop. I’ve two variables. var columns = 4, rows = 5; So, the array would be look like this according to the value of i (in loop)…

Create N dimensional grid of points in Javascript

I know there are similar questions out there (the closest one I found was this JavaScript; n-dimensional array creation) but most one them are in Python and even this one I found I tried to implement …

Javascript check if value exists in 2d array update else create

I’m creating a 2d array for a Google pie chart The array has to be in the format [ //category, value [2, 11], [5, 2], [6.6, 2], [7.7, 2], [8.8, 7] ] What I’m trying …