Question

How to print map with forEach in JavaScript

Answer 1

const mp = new Map();

mp.set('a', 1);
mp.set('bb', 2);
mp.set('ccc', 3);
mp.set('dddd', 4);
mp.set('eeeee', 5);

function printMap(value, key) {
    console.log(`Key: ${key}, Value: ${value}`);
}

mp.forEach(printMap);
 
 
     
     
/*
run:
     
"Key: a, Value: 1"
"Key: bb, Value: 2"
"Key: ccc, Value: 3"
"Key: dddd, Value: 4"
"Key: eeeee, Value: 5"
     
*/

 

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Answer 2

const mp = new Map();

mp.set('a', 1);
mp.set('bb', 2);
mp.set('ccc', 3);
mp.set('dddd', 4);
mp.set('eeeee', 5);

mp.forEach((value, key) => {
    console.log(`Key: ${key}, Value: ${value}`);
});
 
 
     
     
/*
run:
     
"Key: a, Value: 1"
"Key: bb, Value: 2"
"Key: ccc, Value: 3"
"Key: dddd, Value: 4"
"Key: eeeee, Value: 5"
     
*/

 

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