non bubling events

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  • Brian Genisio

    non bubling events

    Hello all,

    In IE, when an event occurs, as long as it returns true, and
    cancelBubble is not set, the event will bubble up through the elements
    in the DOM tree.

    Though, there is at least one event that does not bubble... the onLoad
    event.

    For instance:
    <BODY onLoad="alert(' body onload')">
    <IMG src=img.gif onLoad="alert(' img onload');">
    <SCRIPT>alert(" TEST");</SCRIPT>
    </BODY>

    will show : "img onload", "test", "body onload".

    This prooves that the onLoad event did not bubble, even if true is
    returned and cancelBubble == false.

    Of course, this makes sense. Just because the image has loaded, does
    not mean that entire page has loaded.

    So, here is my question:
    In what other cases are events not bubbled? Is there a pattern? Or is
    this the only case?

    Thanks,
    Brian

  • Martin Honnen

    #2
    Re: non bubling events



    Brian Genisio wrote:

    [color=blue]
    > In IE, when an event occurs, as long as it returns true, and
    > cancelBubble is not set, the event will bubble up through the elements
    > in the DOM tree.
    >
    > Though, there is at least one event that does not bubble... the onLoad
    > event.
    >
    > For instance:
    > <BODY onLoad="alert(' body onload')">
    > <IMG src=img.gif onLoad="alert(' img onload');">
    > <SCRIPT>alert(" TEST");</SCRIPT>
    > </BODY>
    >
    > will show : "img onload", "test", "body onload".
    >
    > This prooves that the onLoad event did not bubble, even if true is
    > returned and cancelBubble == false.
    >
    > Of course, this makes sense. Just because the image has loaded, does
    > not mean that entire page has loaded.
    >
    > So, here is my question:
    > In what other cases are events not bubbled? Is there a pattern? Or is
    > this the only case?[/color]

    For IE, check the docs at

    they tell you which events bubble.

    For DOM compliant browsers, check the W3C DOM Events specification at
    http://www.w3.org/DOM/, it also lists which events bubble.
    --

    Martin Honnen


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