javascriptmaps

Compare 2 maps in JavaScript

i want to ask if it's possible to do this:

const map1 = new Map();
map1.set('1', "led");
map1.set('2', "zeppelin");

const map2 = new Map();
map2.set('1', "led");
map2.set('2', "floyd");

I want to compare these 2 maps and find the differences between them.

Solution 
  • 
const map1 = new Map();
map1.set('1', "led");
map1.set('2', "zeppelin");

const map2 = new Map();
map2.set('1', "led");
map2.set('2', "floyd");

let isSame = true;
map1.forEach(function(val, key) {
    if(map2.get(key) != val){
        console.log(`map1.${key} = ${val} | map2.${key} = ${map2.get(key)}`);
        isSame = false;
    }
});
if(isSame){
    map1.set('3', "plant"); 
    map1.forEach(function(val, key) {
        console.log(`map1.${key} => ${val}`);
    });
}