How to Fix the Issue of querySelector Working Only Once for Classes in JavaScript

Discover how to overcome the limitation of using `querySelector` for classes in your JavaScript code by switching to `querySelectorAll`, allowing for multiple elements to be targeted effectively.
---

Visit these links for original content and any more details, such as alternate solutions, latest updates/developments on topic, comments, revision history etc. For example, the original title of the Question was: Script with querySelector works only once for class

If anything seems off to you, please feel free to write me at vlogize [AT] gmail [DOT] com.
---
Understanding the Problem: Why Does querySelector Work Only Once?

If you've ever found yourself struggling with JavaScript to manipulate elements with the same CSS class, then you might have encountered a frustrating scenario: the querySelector method works perfectly on the first instance of an element with a specified class, but fails to affect subsequent elements. This can be particularly tricky to diagnose, especially if you're tasked with ensuring multiple elements function similarly without adding multiple unique classes or IDs.

The Solution: Using querySelectorAll

To resolve this limitation, we need to switch gears and make use of the querySelectorAll method. This method allows us to select all elements that match a given selector, making it perfect for our use case. Let's break down the solution into clear sections to implement it correctly.

Step-by-Step Implementation

Replace querySelector with querySelectorAll:
This change allows you to select all instances of the .inp class, rather than just the first one.

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

Add Event Listener to Each Instance:
Within the forEach loop, you can bind the necessary event listeners to each input element found in the .inp containers.

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

Input Processing Logic:
You should adjust your event listener logic to ensure that user input is sanitized and the focus is shifted to the next input field when applicable.

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

Full Working Code Example

Here's how your complete code should look after the modifications:

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

Conclusion: Making JavaScript Work for You

By utilizing querySelectorAll, you can ensure that each element you need to interact with is included in your JavaScript logic. This adjustment not only simplifies your coding but ultimately enhances user experience by allowing seamless interaction across multiple input fields.

Now that you have the solution, feel free to apply this knowledge in your projects, and watch your JavaScript code become more efficient and effective!