Calling the stopImmediatePropagation() from within an event handler/listener will stop the event flow phases (i.e. stopPropagation()), as well as any other like events attached to the event target that are attached after the event listener that invokes the stopImmediatePropagation() method. In the code example below If we call stopImmediatePropagation()from the second event listener attached to the
the click event that follows will not get invoked.
Utilizing the stopImmediatePropagation() will not prevent default situations. Internet browser standard situations nevertheless get invoked and simply calling preventDefault() stop these events.
Individualized events
A creator isn’t simply for the latest predetermined experience products. Its possible to connect and you can invoke a custom knowledge, using the addEventListener() strategy like normal from inside the combiniation with document.createEvent(), initCustomEvent(), and you will dispatchEvent(). From the code below I do a personalized skills called goBigBlue and you will invoke you to enjoy.
Cards
New DOM 4 specifiction extra a CustomEvent() constructor who’s simplistic living duration of a custom event but it’s just not served from inside the ie9 and as of writting in fact it is nonetheless in flux
Simulating/Causing mouse events
Simiulating an event is not unlike creating a custom event. In the case of simulating a mouse event we create a ‘MouseEvent’ using document.createEvent(). Then, using initMouseEvent() we setup the mouse event that is going to occur. Next the mouse event is dispatched on the element that we’d like to simulate an event on (i.e the
in the
html document). In the code below a click event is attached to the
in the page. Instead of clicking the
to invoke the click event the event is triggered or simulated by programatically setting up a mouse event and dispatching the event to the
.
Notes
Simulating/creating mouse events as of this creating functions throughout progressive web browsers. Simulating almost every other experiences items quickly gets to be more difficult and you may leveraging replicate.js otherwise jQuery (age.g. jQuery result in() method) gets neccsary.
Experiences delegation
Event delegation, stated simply, is the programmatic act of leveraging the event flow and a single event listener to deal with multiple event targets. A side effect of event delegation is that the event targets don’t have to be in the DOM when the event is created in order for the targets to respond to the event. This is of course rather handy when dealing with XHR responses that update the DOM. By implementing event delegation new content that is added to the DOM post JavaScript load parsing can immediately start responding to events. Imagine you have a table with an unlimited number of rows and columns. Using event delegation we can add a single event listener to the
node which acts as a delegate for the node or object that is the initial target of the event. In the code example below, clicking any of the
‘s (i.e. the target of the event) will delegate its event to the click listener on the
. Don’t forget this is all made possible because of the event flow and in this specific case the bubbling phase.
|