JSFiddle - React, Tailwind, and code Playground
JavaScript
var myMap = new Map();
myMap.set(1, [0,0,0,1,2]);
myMap.set(2, [1,0,1,0,2]);
console.log("Before");
console.log(myMap);
console.log(myMap.keys())
console.log(myMap.values())
myMap.get(1)[2] = 2; // [0,0,2,1,2]
myMap.get(2)[1] = 2; // [1,2,1,0,2]
console.log("After");
console.log(myMap);
console.log(myMap.keys())
console.log(myMap.values())