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jQuery event delegation optimization guide with dynamically added elements in nested structures

👀 Views: 81 💬 Answers: 1 📅 Created: 2025-06-14
jquery event-delegation dom-manipulation javascript

I'm working with an scenario with event delegation in jQuery while trying to manage click events on dynamically added elements within a nested structure. I have a parent `div` containing several `button` elements, and new buttons get added to the DOM based on user interaction. The key point is that these buttons are added to a nested `div`, and I'm trying to attach an event listener using jQuery's `on` method. Here's the relevant part of my code: ```javascript $(document).ready(function() { $('#parentDiv').on('click', '.nestedButton', function() { alert('Nested button clicked!'); }); }); function addButton() { $('#nestedDiv').append('<button class="nestedButton">Click me</button>'); } ``` Initially, I can see the alert when I click on buttons added before calling the `addButton` function. However, when I call `addButton` to append new buttons, the event listener does not trigger for those new buttons. I've checked the jQuery version, which is `3.6.0`, and I've made sure that the classes match. I also tried using `$(document).on('click', '.nestedButton', function() { ... });` but that didn’t change the outcome. I suspect it might be related to how the event delegation is set up, but I thought this structure would work. Is there something I'm missing about how jQuery handles event delegation in nested elements? Any insights or best practices would be greatly appreciated!