Convert Map to Object in JavaScript

Introduction

In this lab, we will explore how to convert a Map to an object in JavaScript. We will use the Map.prototype.entries() method to get an array of key-value pairs from the Map and then use Object.fromEntries() to convert the array to an object. This lab will provide a better understanding of the use of Map and Object in JavaScript.

Skills Graph

%%%%{init: {'theme':'neutral'}}%%%% flowchart RL javascript(("`JavaScript`")) -.-> javascript/BasicConceptsGroup(["`Basic Concepts`"]) javascript(("`JavaScript`")) -.-> javascript/AdvancedConceptsGroup(["`Advanced Concepts`"]) javascript/BasicConceptsGroup -.-> javascript/variables("`Variables`") javascript/BasicConceptsGroup -.-> javascript/data_types("`Data Types`") javascript/BasicConceptsGroup -.-> javascript/arith_ops("`Arithmetic Operators`") javascript/BasicConceptsGroup -.-> javascript/comp_ops("`Comparison Operators`") javascript/AdvancedConceptsGroup -.-> javascript/higher_funcs("`Higher-Order Functions`") javascript/AdvancedConceptsGroup -.-> javascript/destr_assign("`Destructuring Assignment`") subgraph Lab Skills javascript/variables -.-> lab-28215{{"`Convert Map to Object`"}} javascript/data_types -.-> lab-28215{{"`Convert Map to Object`"}} javascript/arith_ops -.-> lab-28215{{"`Convert Map to Object`"}} javascript/comp_ops -.-> lab-28215{{"`Convert Map to Object`"}} javascript/higher_funcs -.-> lab-28215{{"`Convert Map to Object`"}} javascript/destr_assign -.-> lab-28215{{"`Convert Map to Object`"}} end

Instructions for Converting Map to Object in JavaScript

To convert a JavaScript Map to an object, follow these steps:

Open the Terminal/SSH and type node to start practicing coding.

Use the Map.prototype.entries() method to convert the Map to an array of key-value pairs.

Use the Object.fromEntries() method to convert the array to an object.

Here is an example code snippet for converting a Map to an object:

const mapToObject = (map) => Object.fromEntries(map.entries());

To test the function, you can run:

mapToObject( new Map([ ["a", 1], ["b", 2] ]) ); // {a: 1, b: 2}