event-listener

PHP Event-Listener best-practice implementation

Well, there’s really three different ways of doing this from an implementation perspective (note that these are OO design patterns, but you could implement them functionally or procedurally if you wanted to). 1. Observer Pattern You can implement the Observer Pattern. Basically, you’d have each thing that can raise events be a subject. Then the … Read more

FOSUserBundle : Redirect the user after register with EventListener

To accomplish what you want, you should use FOSUserEvents::REGISTRATION_CONFIRM instead of FOSUserEvents::REGISTRATION_CONFIRMED. You then have to rewrite rewrite your class RegistrationConfirmedListener like: class RegistrationConfirmListener implements EventSubscriberInterface { private $router; public function __construct(UrlGeneratorInterface $router) { $this->router = $router; } /** * {@inheritDoc} */ public static function getSubscribedEvents() { return array( FOSUserEvents::REGISTRATION_CONFIRM => ‘onRegistrationConfirm’ ); } public … Read more

Adding Event Listeners on Elements – Javascript

The way you are doing it is fine, but your event listener for the click event should be like this: button.addEventListener(“click”, function() { alert(“alert”);}); Notice, the click event should be attached with “click”, not “onclick”. You can also try doing this the old way: function onload() { var button = document.getElementById(“buttonid”); // add onclick event … Read more

reactjs event listener beforeunload added but not removed

The removeEventListener should get the reference to the same callback that was assigned in addEventListener. Recreating the function won’t do. The solution is to create the callback elsewhere (onUnload in this example), and pass it as reference to both addEventListener and removeEventListener: import React, { PropTypes, Component } from ‘react’; class MyComponent extends Component { … Read more

jFormattedTextField’s Formatter.setCommitsOnValidEdit(true) doesn’t work at first focus

Actually, setCommitOnValidEdit should work always as you expect (and does in the code snippet below), no need for a DocumentListener, after all, the method is exactly for that purpose. So I suspect something else is wrong in your context. Or for some reason the very first edit isn’t parsed to anything valid? NumberFormatter numberFormatter = … Read more

removeEventListener without knowing the function

getEventListeners(window) will return a map of events and their registered event listeners. So for DOMContentLoaded event for example you can have many event listeners. If you know the index of the listener you want to remove (or if there exists only one), you can do: var eventlistener = getEventListeners(window)[“DOMContentLoaded”][index]; window.removeEventListener(“DOMContentLoaded”, eventlistener.listener, eventlistener.useCapture);

Watch for Dynamically Added Class

Try $(document).ready(function() { var target = $(“#test”).get(0); // create an observer instance var observer = new MutationObserver(function(mutations) { mutations.forEach(function(mutation) { // do stuff when // `attributes` modified // i.e.g., alert(mutation.type); target.innerHTML = “class added: ” + “<em>” + target.className + “</em>”; }); }); // configuration of the observer: var config = { attributes: true }; … Read more