Assume that there is div
block, inside that block are many elements and they will fire many events. I don't want those events continuing bubble up, or listeners outside the div
block may process wrong events with the same names. Can I make this without listening to bunch of events and stop them one by one?
You must listen to every events individually and stop their propagation using e.stopPropagation()
, where e
is the event object. There's no way to listen to every events at once and unless you have a very specific subset of events, I wouldn't take this approach.
The most common way to handle bubbling events correctly is to validate the target element ( e.target
) and ignore accordingly.
For exemple, you could check if e.target === e.currentTarget
to know if the event came from a child or not.
var logEl = document.getElementById('log'); document.getElementById('parent').addEventListener('click', function (e) { log('event comes from child? ' + (e.target !== e.currentTarget)); }); function log(msg) { logEl.appendChild(document.createElement('br')); logEl.appendChild(document.createTextNode(msg)); }
#parent, #parent > div { padding: 20px; border: 1px solid red; } #parent { height: 100px; width: 200px; }
Click inside the boxes <div id="parent"> parent <div>child</div> </div> <div id="log"></div>
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