How to Push Created Objects into an Array in JavaScript

Learn how to `properly store and display created objects` in an array using JavaScript. This guide covers the basics of object creation and fixing common issues with data storage.
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Pushing Created Objects into an Array in JavaScript

When working with JavaScript, there's a common scenario that developers encounter: wanting to store multiple objects in an array and then display them. This is particularly important when your application needs to handle dynamic input, such as user-generated books, as we will discuss in this guide.

The Problem at Hand

Imagine you're creating a simple library application that lets users input book details like the title, author, and number of pages. However, you run into a problem where every time a new book is added, it seems to overwrite the existing entries in your display. This can be frustrating, especially when you're trying to collect and showcase multiple entries.

The main issue is that you're likely not handling the display of your objects correctly in the DOM after pushing them into an array. Let’s dive into a solution that will allow you to create objects, push them into an array, and then display all of them correctly.

Step-by-Step Solution

1. Set Up the HTML Structure

First, ensure your HTML is structured to take input and display results. Here’s a simple form setup:

[[See Video to Reveal this Text or Code Snippet]]

2. Define the Book Class

Next, define a class to encapsulate the properties of each book. The Book class can look something like this:

[[See Video to Reveal this Text or Code Snippet]]

3. Create an Array for Storage

Now, you need an array to store your book objects:

[[See Video to Reveal this Text or Code Snippet]]

4. Add Event Listener for Form Submission

You will want to listen for form submissions, create a new book object, and push it to the array. Additionally, reset the input fields afterward.

[[See Video to Reveal this Text or Code Snippet]]

5. Displaying the Books

You need a function that iterates over the myLibrary array and constructs a string of HTML list items for each book. This string will then replace the inner HTML of your book list.

[[See Video to Reveal this Text or Code Snippet]]

Conclusion

By following these steps, you now have a simple yet effective way to push created objects into an array and display them on the screen without overwriting old entries. Each time a user submits a new book, it gets added to the list, and all existing entries remain intact.

Now that you've implemented this solution, you can continue enhancing your application by adding features such as editing or removing books, or even saving your library data to local storage. Happy coding!