How To Use Data Objects in Javascript?

Dapheny Murphy | October 2, 2023

How To Use Data Objects in Javascript?

In JavaScript, an object is a discrete entity characterized by properties and a specific type. Objects are utilized to manage substantial amounts of data within extensive applications.

For instance, envision a book as an object with properties like its title, author's name, and the number of pages it contains.

To declare an object in JavaScript, you can use the following syntax:

const book = {"Title": "A Passage to India", "Pages": "500", "Author": "E.M. Foster"};

Accessing properties of JavaScript objects can be achieved through three different methods:

  • Dot Property Accessor
    • Example: console.log(book.Title); // => A Passage to India
    • Alternatively, you can use identifiers within square brackets:
      console.log(book['Author']); // => 'E.M. Foster
  • Square Brackets Property Accessor

    You can also use square brackets to access properties. For example:

    const property = 'Title';
    const book = {
    title: 'A Passage to India'
    // Square brackets property accessor
    console.log(book['Title']); // => 'A Passage to India'
    console.log(book[property]); // => 'A Passage to India'

  • Object Destructuring: Object destructuring allows you to extract properties into variables. Here's an example:

    const book = {
    title: 'A Passage to India'
    // Object destructuring
    const { title } = book;
    console.log(title); // => 'A Passage to India'

These methods provide various ways to access and manipulate object properties in JavaScript.


This publication is for informational purposes only, and nothing contained in it should be considered legal advice. We expressly disclaim any warranty or responsibility for damages arising out of this information and encourage you to consult with legal counsel regarding your specific needs. We do not undertake any duty to update previously posted materials.

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