Javascript Map get()

Introduction

The Javascript Map get() method returns a specified value by key from a Map object. 

myMap.get(key)
  • key - the key of the element to return from the Map object.

It returns undefined if the key can't be found in the Map object. 

let myMap = new Map();
myMap.set('bar', 'foo');
console.log(myMap);//from  w ww  .j a va  2  s  . co  m

let a = myMap.get('bar');
console.log(a);// Returns "foo"
myMap.get('aKey');
console.log(a);// Returns undefined



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