Question

How to iterate over map keys and values in JavaScript

Answer 1

const mp = new Map();

mp.set('c', 1);
mp.set('cpp', 2);
mp.set('java', 3);
mp.set('javascript', 4);

mp.forEach((value, key) => {
	console.log(`key: ${key} value: ${value}`);
});



/*
run:

key: c value: 1
key: cpp value: 2
key: java value: 3
key: javascript value: 4

*/

 

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Answer 2

const mp = new Map();

mp.set('c', 1);
mp.set('cpp', 2);
mp.set('java', 3);
mp.set('javascript', 4);

for (const [key, value] of mp) {
    console.log('key:', key, 'value:', value);
}

 
 
/*
run:
 
key: c value: 1
key: cpp value: 2
key: java value: 3
key: javascript value: 4
 
*/

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