Question

How to use forEach() with a Map to execute a provided function once per each key/value in JavaScript

Answer 1

function printMapElement(value, key, map) {
    console.log(`map[${key}] = ${value}`);
}

new Map([
  ['abc', 87],
  ['xyz', {}],
  ['uvw', undefined],
]).forEach(printMapElement);




      
/*
run:
      
map[abc] = 87
map[xyz] = [object Object]
map[uvw] = undefined

*/

 

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