Closed
Bug 159285
Opened 23 years ago
Closed 23 years ago
document.onload firing before document loaded
Categories
(Core :: DOM: Events, defect)
Tracking
()
VERIFIED
INVALID
People
(Reporter: will, Assigned: joki)
References
()
Details
From Bugzilla Helper:
User-Agent: Mozilla/5.0 (Windows; U; Win98; en-US; rv:1.1b) Gecko/20020721
BuildID: 2002072104
in a page containing javascript which defines document.onload = function() the
call to function is happening before the document is loaded
in particular a call to document.getElementById(name) will fail when called
whereas it doesn't when called from the body onload="" attribute
Reproducible: Always
Steps to Reproduce:
1.Load the page http://odin.himinbi.org/~will/test_document_load.html
2.Note "no" at the end of first alert message
3.Note "yes" at the end of second alert message
Actual Results: Two alerts come up; the first (fired by document.onload)
representing that document.getElementById failed and the second (fired by body
onload="") representing that the same call succeeded
Expected Results: Both alerts should succeed. As best I can tell the onload
event should not be fired until the document is loaded.
http://www.w3c.org/TR/2000/REC-DOM-Level-2-Events-20001113/events.html#Events-eventgroupings-htmlevents
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Comment 1•23 years ago
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It seems that the browser fires document.onload when it finishes
download the document source and /then/ the browser executes all
other scripts:
<html>
<script type="text/javascript">
document.onload = alert('document.onload fired');
</script>
<body onload="alert('body.onload fired')">
<script type="text/javascript">
alert('embeded script executed');
</script>
</body>
</html>
you will see three messages in this order: document.onload fired,
embed script executed, body.onload fired
the result is the same with MSIE5
so I guess the expected behavior is that (HTML)Document is
'loaded' before it fully inserts all the (HTML)Elements.
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Comment 2•23 years ago
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document.onload = init("document.onload")
means
"Run the function 'init' right now, passing it the argument 'document.onload'.
The return value will be a function which should be installed as the onload
handler on the document".
So the behavior on your testcase is in fact correct.
What you want to do is:
document.onload = init;
(note that 'init' is _not_ called in this case; it is merely assigned to the
onload handler. It will be called with a single argument which is the onload
event when the load actually completes).
Status: UNCONFIRMED → RESOLVED
Closed: 23 years ago
Resolution: --- → INVALID
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Description
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