In my application I create some new elements and append them to the page according to use's operation,  var dv=document.createElement('div'); //set styles for the dv .....   After create this div element,I will add some event to it:  MyLi...
Normally you write a handler for a button click like this:  $(document).ready(function() {    $("button").click(function()   {         doSomething();   }); });   But in the case of an event delegator, to respond to an event with a function su...
UPDATE: (recap, fiddle and bounty)  This question hasn't been getting too much attention, so I'm going to spend some rep on it. I know I tend to be overly verbose in both my answers and questions. That's why I went ahead and set up this f...
In jQuery, you can do the following:  $('#j_unoffered').on('click', '.icon_del', function () {...   This puts one handler on the element j_unoffered that fires if any descendant element with class icon_del is clicked. It appli...
The old event management in which each handler for specific actions was directly attached to the target element is becoming outdated, since considerations about performance and memory saving started spreading in the developers community.  Event deleg...
When creating event handlers in a Rails/Turbolinks-enabled app, is it best to delegate to document.body or document? Is there an accepted convention?  I've read that delegating to document is slightly less performant. However, it does allow you t...
I am adding a slider dynamically on a page using a string like the one below:  "<input type=\"range\" name=\"aName\" min=\"1\" max=\"9\"/>";   Then, after I append it to the page using plain javascript I...
I'm a big fan of using jQuery's delegated event handling signature:  $('.container').on('click', '.button', function () {   // do something });   I'm also a big fan of using the multiple event handler signature:  $...
Here's what I have:   A web application that runs in a single HTML page (call it myapp.req), with content coming and going via AJAX The application can be entered externally with a link such as myapp.req?id=123, and the application opens a tab wi...
I was wondering.. The second JQuery's on() syntax passes events like an object:  services.on({   'mouseenter': function(e){     console.log('enter', e.target);   },    'mouseleave': function(e){     console.log('leave&...

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