Closed
Bug 301401
Opened 19 years ago
Closed 19 years ago
Assigning a function to an event handler (such as onload) dynamically does not work
Categories
(Firefox :: General, defect)
Tracking
()
People
(Reporter: dkbat6, Unassigned)
Details
Attachments
(1 file)
|
180 bytes,
text/html
|
Details |
User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; .NET CLR 1.1.4322; .NET CLR 2.0.50215)
Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8b4) Gecko/20050719 Firefox/1.0+
When I try to set an event handler for, say, the BODY element of an HTML page
by a direct assignment in Javascript, the function that I set to be used for
that event handler never gets called. For instance, if I use the following
HTML page
<HTML>
<BODY>
<SCRIPT>
document.getElementsByTagName("BODY")[0].onunload=unloadBody
function unloadBody()
{
alert("here")
}
</SCRIPT>
</BODY>
</HTML>
When I navigate to another page or hit the refresh button, I SHOULD see an
alert come up that says "hello". However, this never occurs. In addition, if
I use the line
document.getElementsByTagName("BODY")[0].onunload=unloadBody()
then things all work as they SHOULD work when using the other statement (the
different being that this one has parentheses following the function name).
This syntax should result in something totally different, that is, the
onunload event handler should be given the value RETURNED from the function
unloadBody.
In addition to this, the following syntax should work (but doesn't):
document.getElementsByTagName("BODY")[0].onunload=function () {alert("here");}
Once again, this should show an alert upon navigating to another page or
hitting the refresh button.
Reproducible: Always
Steps to Reproduce:
1. Open the HTML page that is attached to this bug report (or just paste the
HTML code from above into a file and open that file)
2. Press the refresh button, navigate to a different page, or close the
browser window/tab. (all of which in turn cause the BODY onunload event to be
fired)
Actual Results:
Nothing happens. No alert, no error, no nothing.
Expected Results:
An alert should have popped up displaying "hello".
I have been told that this bug does not occur in Firefox 1.0.4
|
||
Comment 2•19 years ago
|
||
*** This bug has been marked as a duplicate of 52440 ***
Status: UNCONFIRMED → RESOLVED
Closed: 19 years ago
Resolution: --- → DUPLICATE
You need to log in
before you can comment on or make changes to this bug.
Description
•