Скачать или смотреть How to Use .click() on Dynamically Named Elements in jQuery

Discover how to dynamically handle multiple file uploads with jQuery's `.click()` and `.on()` methods. Learn effective techniques for managing clicks on buttons associated with hidden input elements.
---
This video is based on the question https://stackoverflow.com/q/62843886/ asked by the user 'horse' ( https://stackoverflow.com/u/13402819/ ) and on the answer https://stackoverflow.com/a/62843942/ provided by the user 'osekmedia' ( https://stackoverflow.com/u/2578384/ ) 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: .click() On Dynamically Named Element

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.
---
Handling Click Events on Dynamically Named Elements in jQuery

Are you facing a challenge with jQuery where you need to trigger a click event on dynamically named elements? If your web application involves multiple file uploads, each associated with its own button, this guide will walk you through a common issue and how to resolve it using jQuery.

The Problem

You have a setup where clicking a button should open a file upload dialog. However, the button corresponds to different hidden input elements for file uploads, and you need the click event to dynamically link to the right input based on the button clicked. Your original implementation might look something like this:

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

This approach works for static elements, but what if your elements are being added dynamically? The current implementation may fail, as jQuery can't bind events to elements that don't exist at the moment the script runs.

The Solution: Using .on() Method for Dynamic Elements

To fix this issue, you can utilize jQuery's .on() method, which is designed to handle event delegation. This allows you to bind event handlers to elements that may be created after the initial page load. Here’s how you can do it:

Step 1: Modify the Click Event Binding

Instead of using .click() directly after the document is ready, you can use the .on() method like this:

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

Step 2: Explanation of the Code

Dynamic Selector: By using $("# fileupload" + this.id), you're dynamically creating your selector based on the button's id. This ensures that clicking the correct button opens the corresponding file upload input.

Event Delegation: The .on('click', function() {...}) method attaches the click event handler to the current set of .js-upload-photos elements, even if they are added later. This means that as long as the buttons have the correct class, your event handler will be effective.

Key Takeaways

Dynamically Named Selectors: Using a combination of # fileupload with this.id allows for dynamically selecting the correct input element based on user interaction.

Event Delegation with .on(): Using .on() helps manage events for elements that are created dynamically after the document's ready state, preventing issues when users interact with components that weren't there initially.

By restructuring your jQuery code as demonstrated above, you can easily handle clicks on multiple file upload buttons, ensuring that the right file input is triggered each time a button is pressed.

Conclusion

In conclusion, handling dynamic elements in jQuery might seem daunting at first, but with a little understanding of the methods available to you, like .on(), it becomes much simpler. Now you can manage dynamic file uploads effortlessly! Happy coding!