JSFiddle - React, Tailwind, and code Playground

JavaScript

function ImageStruct() {
    this.id = -1;
    this.isCover = true;
    this.isPaired = false;
    this.row = -1;
    this.column = -1;
} 

var id = 1;
var row = 0;
var column = 2;

var imgStruct = new ImageStruct();
imgStruct.id = id;
imgStruct.row = row;
imgStruct.column = column;


var matrixPos = [[]];
matrixPos[row][column] = imgStruct;
var imgStrc = matrixPos[row][column];


imgStrc.id = 10;

alert(imgStruct.id);