When I want to prevent other event handlers from executing after a certain event is fired, I can use one of two techniques. I'll use jQuery in the examples, but this applies to plain-JS as well:  1. event.preventDefault()  $('a').click(...
Can anyone please explain event delegation in JavaScript and how is it useful?...
I need to debug a web application that uses jQuery to do some fairly complex and messy DOM manipulation. At one point, some of the events that were bound to particular elements, are not fired and simply stop working.  If I had a capability to edit...
I'm trying to remove an event listener inside of a listener definition:  canvas.addEventListener('click', function(event) {     click++;     if(click == 50) {         // remove this event listener here!     } // More code here ...   How...
I'm an experienced Java programmer but am looking at some JavaScript/HTML5 stuff for the first time in about a decade.  I'm completely stumped on what should be the simplest thing ever.  As an example I just wanted to draw something and add...
Ok, i'll try and make this quick because it SHOULD be an easy fix...  I've read a bunch of similar questions, and the answer seems to be quite obvious. Nothing I would ever have to look up in the first place! But... I am having an error tha...
My HTML:  <div id="x" onclick="clickHandler(event)">    <div id="button1">This turns green</div>    <div id="button2">This turns blue</div> </div>   So first of all, why am I suppose...
I'm getting a JSON element and building a list from its items like this:  getTitles: function(data) {     data = data || {};     var list = [];      $.getJSON(         '/titles',         data,         function(data) {             $.each(d...

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