Скачать или смотреть How to Get the Value of an input in HTML Using JavaScript

Discover the best methods for retrieving an ` input `'s `value` in HTML with JavaScript in this comprehensive guide.
---
This video is based on the question https://stackoverflow.com/q/67541115/ asked by the user 'Theodore' ( https://stackoverflow.com/u/15679282/ ) and on the answer https://stackoverflow.com/a/67541232/ provided by the user 'Matias Coco' ( https://stackoverflow.com/u/14127286/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

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: How to get the input 's value?

Also, Content (except music) licensed under CC BY-SA https://meta.stackexchange.com/help/l...
The original Question post is licensed under the 'CC BY-SA 4.0' ( https://creativecommons.org/licenses/... ) license, and the original Answer post is licensed under the 'CC BY-SA 4.0' ( https://creativecommons.org/licenses/... ) license.

If anything seems off to you, please feel free to write me at vlogize [AT] gmail [DOT] com.
---
How to Get the Value of an <input> in HTML Using JavaScript

Are you looking to retrieve the value entered in an HTML input field but struggling to get it right? Many developers, especially those new to JavaScript and HTML, encounter the challenge of accessing the input value for various functionalities such as forms, data validation, or interactive content. In this post, we will address an example problem and provide clear, step-by-step solutions to help you effectively get the input value using JavaScript.

The Problem

Imagine you have created a simple webpage with an HTML input field and a button, wanting to alert the user with the value they type in. Though you might have tried some JavaScript code snippets, they may not have worked as expected. A common scenario could look like this:

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

If your JavaScript function did not alert the input value as intended, don't worry! Let's break down the correct approach to achieve this.

The Solution

The most efficient way to access the input value involves using a form element combined with JavaScript event listeners. Below is how you can implement this effectively.

Step 1: Create a Form Structure

The first step is to wrap your input field and button within a form element. This allows you to manage the submission and retrieval of data more seamlessly.

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

Step 2: Add JavaScript to Retrieve Input Value

Next, include the following JavaScript code to handle the form submission event, prevent the default action of reloading the page, and alert the input value.

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

Explanation of the Code

Prevent Default Submission: The e.preventDefault() method stops the default behavior of form submission, which is refreshing the page. This allows us to process the data without losing it immediately.

Retrieve Input Value with FormData: The FormData object represents the form and helps us collect all the data from the inputs. Using formData.get("my-input") allows us to fetch the specific value associated with the input name.

Summary

By following the structured approach above, you can easily get the value from an <input> element. Remember:

Enclose your input and button in a form.

Use an event listener to prevent the default behavior of form submission.

Utilize FormData() to easily manage and retrieve input values.

This method not only allows you to retrieve values effortlessly but also sets a solid foundation for building interactive user forms in your web applications. For more practices and examples, consider looking into resources like W3Docs, MDN Web Docs, and other developer communities.

Now you should be equipped to retrieve input values successfully and enhance user experience on your webpages!