CODEWITHSUNDEEP
jquery
Arun
Arun

Reputation: 3077

Triggering a custom jQuery event without bubbling

I want to trigger a non-bubblable custom jQuery event on an object. I know we can either use return false or stopPropagation to prevent bubbling. What I want to know is can I trigger a custom event and specify that by default it does not bubble.

This is the code I have now

        $(".abc").on("change", function () {
            var e = new $.Event("datachange");
            $(this).trigger(e)
        });

The above triggers the datachange event on #abc and bubbles the event all the way up. I don't want that. I can achieve that by using the following.

        $(".abc").on("change", function () {
            var e = new $.Event("datachange");
            //e.stopPropagation(); this does not work
            $(this).trigger(e)
        }).on("datachange", function (e) {
            e.stopPropagation();
            return false;
        });

I read that triggerHandler does something similar, but only for the first matching element.

Is there a better way to achieve this?

Upvotes: 11

Views: 7226

Answers (1)

Frédéric Hamidi
Frédéric Hamidi

Reputation: 262979

You are right that triggerHandler() only applies to the first element in the set, but that should not be a problem because the set you build with $(this) only contains one element.

Therefore, you can safely write:

$(".abc").on("change", function() {
    $(this).triggerHandler("datachange");
});

That way, the datachange event will not bubble up the document tree.

Upvotes: 17

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