How to Display Input Values in a Verification Code Form with JavaScript

Discover how to keep your input fields updated in a verification code form using JavaScript and jQuery. Achieve a cleaner interface by displaying input values only when all fields are filled!
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How to Display Input Values in a Verification Code Form with JavaScript

Verification code forms are a common feature in web applications, used for authentication purposes. However, you may run into issues where the entered numbers aren’t displayed as intended. In this guide, we will explore a solution to effectively display the entered numbers in a "Current Verification Code" field only when all input fields are filled.

The Problem

Imagine you have a form where a user has to enter a 4-digit verification code. You will most often find four individual input fields for each digit. The challenge arises when users enter values; the input field that shows the concatenated verification code doesn’t update correctly when users modify their input, or when not all fields are filled.

Input Requirement

The yellow input field should show the entered numbers once all four inputs are filled.

If any of the fields are empty, the yellow input should remain empty to ensure data integrity.

The Solution

To create an efficient system to handle the input and display updates, we will use JavaScript along with jQuery. Here’s how we can achieve that:

Step-by-Step Implementation

HTML Structure: Here, we create four inputs and one verification code output field.

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

JavaScript Logic: Use jQuery to capture the keyup event, allowing us to gather input values and update the yellow display field.

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

CSS for Styling: Make sure your verification code input is easily identifiable.

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

Summary of the Workflow

We created a JavaScript array to hold the values of each input.

We used data-id attributes to track which input corresponds to which index in our array.

Every time a user types in one of the inputs, the code checks if all four inputs contain values.

If they do, it combines and displays them in the yellow input; if not, it clears the input.

Conclusion

Implementing an input verification code form that updates dynamically can greatly improve user experience. By ensuring that the concatenated verification code is only shown when all fields are filled, you promote accuracy and user confidence.

Using JavaScript and jQuery to manage user input allows for a seamless and interactive experience. Feel free to take this code, adapt it to your own needs, and enhance your web forms today!