Скачать или смотреть How to Auto Submit a Form Using jQuery

Discover how to effortlessly `auto submit` a form with jQuery by managing file inputs through validation and event handling for a seamless user experience.
---
This video is based on the question https://stackoverflow.com/q/68508984/ asked by the user 'omkar' ( https://stackoverflow.com/u/16508492/ ) and on the answer https://stackoverflow.com/a/68509210/ provided by the user 'Funky' ( https://stackoverflow.com/u/13000062/ ) 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: jQuery - Auto submit form

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 Auto Submit a Form Using jQuery: A Step-by-Step Guide

Have you ever wanted to create a web form that automatically submits after a user selects a file, but wanted to keep the file input hidden? With jQuery, you can achieve exactly that! In this post, we will walk you through a common scenario where a user clicks on a submit button, a file selection dialog opens, and after selecting a file, the form auto-submits after validation. Let’s dive in!

The Problem

You have a form that includes a hidden file input field, and you want to implement the following behavior:

Hide the file input field from view.

Open the file selection dialog when the submit button is clicked.

Validate the selected file and auto-submit the form after a file is chosen.

Here's a brief overview of the HTML and JavaScript you might be starting with:

Initial HTML Structure

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

Initial JavaScript Code

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

Your current JavaScript handles the button click to open the file dialog but doesn't yet submit the form upon file selection. Let’s enhance this code!

The Solution

Updated jQuery Implementation

To complete your goal, you need to add an event listener to handle the change event on the file input and implement validation. Here’s the refined approach:

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

Key Changes Explained

Event Listeners: When the submit button is clicked, the file input dialog opens. Waiting for the user to select a file is key to managing the auto-submit action.

Validation Logic: In the validation function, you can include checks, for example, to ensure a file was selected, is of an appropriate type, or size.

Auto-Submission: The final step is to submit the form using $('# myForm').submit(); after the validation check.

Complete Code Example

To give you a clearer picture, here’s an encapsulated complete example, with both the HTML and JavaScript combined for easy reference:

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

Conclusion

By following the steps outlined above, you can efficiently create a user-friendly form that auto-submits upon file selection with jQuery. This not only streamlines the user experience but also keeps the interface clean by hiding unnecessary file input elements. If you have any questions or need further assistance, feel free to ask! Happy coding!