The document element is available in the head of the document before loading any other HTML, so it is safe to attach events there without waiting for the document to be ready. Delegated events that use more complex selectors, particularly hierarchical ones, can be several times slower--although they are still fast enough for most applications. - Be sure not to include personal data- Do not include copyrighted material. JSFiddle or its authors are not responsible or liable for any loss or damage of any kind during the usage of provided code. Docs

Starting with jQuery 1.9, sourcemap files are available on the jQuery CDN. Test your JavaScript, CSS, HTML or CoffeeScript online with JSFiddle code editor. HTML: /echo/html/ http://github.com/j-ulrich/jquery-simulate-ext, /echo simulates Async calls: On a data table with 1,000 rows in its tbody, this example attaches a handler to 1,000 elements: About All code belongs to the poster and no license is enforced.

This element could be the container element of a view in a Model-View-Controller design, for example, or document if the event handler wants to monitor all bubbling events in the document. With a simple and prominent select box, readers select their language. jQuery can process simple selectors of the form tag#id.class very quickly when they are used to filter delegated events.

HTML: /echo/html/ JSON: /echo/json/ XML: /echo/xml/. Test your JavaScript, CSS, HTML or CoffeeScript online with JSFiddle code editor. alert( $( this ).text() );

By picking an element that is guaranteed to be present at the time the delegated event handler is attached, you can use delegated events to avoid the need to frequently attach and remove event handlers.

Docs Log in if you'd like to delete this fiddle in the future. Bug tracker /echo simulates Async calls: Log in if you'd like to delete this fiddle in the future. A delegated-events approach attaches an event handler to only one element, the tbody, and the event only needs to bubble up one level (from the clicked tr to tbody): - Be sure not to include personal data- Do not include copyrighted material.

Created and maintained by Piotr and Oskar.

A change in the select box triggers a jQuery action that shows the language selected, hides the others (via CSS), and sets a cookie in the reader's browser to maintain the selected language when navigating to other pages on the site. JSON: /echo/json/ - Be sure not to include personal data- Do not include copyrighted material. About Demo of the jQuery simulate extended plugins.

However, as of version 1.10.0/2.1.0 the compressed jQuery no longer includes the sourcemap comment in CDN copies because it requires the uncompressed file and sourcemap file to be placed at the same location as the compressed file. }); JSONP: //jsfiddle.net/echo/jsonp/ Service status, Bug reporting (test-case) for Github Issues, Presenting code answers on Stack Overflow, ... or just your humble code playground ✌. HTML: /echo/html/ Service status, Bug reporting (test-case) for Github Issues, Presenting code answers on Stack Overflow, ... or just your humble code playground ✌. Attaching many delegated event handlers near the top of the document tree can degrade performance. For best performance, attach delegated events at a document location as close as possible to the target elements. Avoid excessive use of document or document.body for delegated events on large documents. So, "#myForm", "a.external", and "button" are all fast selectors. Js Fiddleest vraiment simple d’utilisation. Roadmap (vote for features) Service status, Michigan Publishing Test your JavaScript, CSS, HTML or CoffeeScript online with JSFiddle code editor. JSONP: //jsfiddle.net/echo/jsonp/ Log in if you'd like to delete this fiddle in the future. Son interface se compose principalement de 5 zones dont 3 sont utilisées pour la rédaction de votre codes (HTML, CSS, JS). JSON: /echo/json/ Created and maintained by Piotr and Oskar. }); alert( $( this ).text() ); JSFiddle or its authors are not responsible or liable for any loss or damage of any kind during the usage of provided code. Created and maintained by Piotr and Oskar. "Delegated events have the advantage that they can process events from descendant elements that are added to the document at a later time. Plymouth, MI, Bug reporting (test-case) for Github Issues, Presenting code answers on Stack Overflow, ... or just your humble code playground ✌. Each time the event occurs, jQuery must compare all selectors of all attached events of that type to every element in the path from the event target up to the top of the document. jQuery; Vue; React; React + JSX; Preact; TypeScript; CoffeeScript; SCSS; CSS Grid; Bootstrap; PostCSS; Show boilerplate bar less often?