In some case "<body onload=alert" don't work in IE6

Tonio Tanzi

I have an asp page with this tag

<body onLoad="show_msg('<%=error_msg%>');">

where "show_msg" is a javascript function that shows the message
contained in the asp variable "error_msg" only if this variable is not
empty. The message is shown using the "alert()" function.

The page works good in almost all the case, but some users have reported
to my that the alert window don't appear.

Evidently the problem is due to theirs configuration of IE (the most of
users don't have this problem), so I've contacted one of these users to
configure his IE step to step.

I've disabled the "Block popup" function and I've configured IE
following a working IE configuration on another computer.
In detail I've imposted the configurations related with the "Security"
and "Advanced" tab.
For the first I've imposted the Internet zone security to "custom" and
reproduced the configuration of the working computer.
I've done the same for the "Advanced" tab.

In spite of this operations IE continues to doesn't show the alert window.

So, finally, the question is: there is some other element of IE beyond
the three I've signaled that can produce this problem?

Thanks
Tonio Tanzi

Jul 28 '07 #1

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5282

David Mark

On Jul 28, 4:22 am, Tonio Tanzi <t.ta...@alice.itwrote:

I have an asp page with this tag

<body onLoad="show_msg('<%=error_msg%>');">

where "show_msg" is a javascript function that shows the message
contained in the asp variable "error_msg" only if this variable is not
empty. The message is shown using the "alert()" function.

The page works good in almost all the case, but some users have reported
to my that the alert window don't appear.

Perhaps the error message has an apostrophe in it. Are they getting a
script error?

>
Evidently the problem is due to theirs configuration of IE (the most of
users don't have this problem), so I've contacted one of these

Scripting disabled?

users to

configure his IE step to step.

>
I've disabled the "Block popup" function and I've configured IE

Has nothing to do with it.

Jul 28 '07 #2

Randy Webb

Tonio Tanzi said the following on 7/28/2007 4:22 AM:

I have an asp page with this tag

<body onLoad="show_msg('<%=error_msg%>');">

where "show_msg" is a javascript function that shows the message
contained in the asp variable "error_msg" only if this variable is not
empty. The message is shown using the "alert()" function.

The page works good in almost all the case, but some users have reported
to my that the alert window don't appear.

Evidently the problem is due to theirs configuration of IE (the most of
users don't have this problem), so I've contacted one of these users to
configure his IE step to step.

I've disabled the "Block popup" function and I've configured IE
following a working IE configuration on another computer.
In detail I've imposted the configurations related with the "Security"
and "Advanced" tab.
For the first I've imposted the Internet zone security to "custom" and
reproduced the configuration of the working computer.
I've done the same for the "Advanced" tab.

In spite of this operations IE continues to doesn't show the alert window.

So, finally, the question is: there is some other element of IE beyond
the three I've signaled that can produce this problem?

There have been problems in the past with IE where the onload doesn't
get triggered if the page is retrieved from the cache. The simplest way
to test and see if that is what is happening here is to add a dummy
parameter to the URL to test with. Simply add ?somethingUnique1 and load
the page and see if the alert shows up.

--
Randy
Chance Favors The Prepared Mind
comp.lang.javascript FAQ - http://jibbering.com/faq/index.html
Javascript Best Practices - http://www.JavascriptToolbox.com/bestpractices/

Jul 28 '07 #3

Tonio Tanzi

David Mark ha scritto:

On Jul 28, 4:22 am, Tonio Tanzi <t.ta...@alice.itwrote:
>I have an asp page with this tag

<body onLoad="show_msg('<%=error_msg%>');">

where "show_msg" is a javascript function that shows the message
contained in the asp variable "error_msg" only if this variable is not
empty. The message is shown using the "alert()" function.

The page works good in almost all the case, but some users have reported
to my that the alert window don't appear.

Perhaps the error message has an apostrophe in it. Are they getting a
script error?

No in this message there isn't an apostrophe, however I know that when
it appear I have to escape it (\').

Tonio Tanzi

Jul 29 '07 #4

Tonio Tanzi

Randy Webb ha scritto:

There have been problems in the past with IE where the onload doesn't
get triggered if the page is retrieved from the cache. The simplest way
to test and see if that is what is happening here is to add a dummy
parameter to the URL to test with. Simply add ?somethingUnique1 and load
the page and see if the alert shows up.

I will do this attempt.
If this is the problem, I think it can be due to the presence of a
proxy, isn't it?

Thanks

Tonio Tanzi

Jul 29 '07 #5

Tonio Tanzi

Randy Webb ha scritto:
....

If the problem is due to a proxy how can I force the reloading of the page?

Thanks

Tonio Tanzi

Jul 29 '07 #6

Randy Webb

Tonio Tanzi said the following on 7/29/2007 3:30 AM:

Randy Webb ha scritto:
...

If the problem is due to a proxy how can I force the reloading of the page?

Send the proper Headers from the server.

--
Randy
Chance Favors The Prepared Mind
comp.lang.javascript FAQ - http://jibbering.com/faq/index.html
Javascript Best Practices - http://www.JavascriptToolbox.com/bestpractices/

Jul 30 '07 #7

Thomas 'PointedEars' Lahn

Tonio Tanzi wrote:

David Mark ha scritto:
>On Jul 28, 4:22 am, Tonio Tanzi <t.ta...@alice.itwrote:
>>I have an asp page with this tag

<body onLoad="show_msg('<%=error_msg%>');">

where "show_msg" is a javascript function that shows the message
contained in the asp variable "error_msg" only if this variable is not
empty. The message is shown using the "alert()" function.

The page works good in almost all the case, but some users have reported
to my that the alert window don't appear.

^^^^^^^^^^^^

>Perhaps the error message has an apostrophe in it. Are they getting a
script error?

No in this message there isn't an apostrophe, however I know that when
it appear I have to escape it (\').

Another explanation is that the error message has a quote in it, which
would result in something like

<body onLoad="show_msg('..."..."...');">

The resulting script code would then be

show_msg('...

which is a syntax error as well.

However, since you are writing about a window, it is more likely that
the popup blocker is blocking the alert window when called from within a
load event listener. Don't do that anyway.
PointedEars
--
Prototype.js was written by people who don't know javascript for people
who don't know javascript. People who don't know javascript are not the
best source of advice on designing systems that use javascript.
-- Richard Cornford, <f8*******************@news.demon.co.uk>

Aug 1 '07 #8

David Mark

On Aug 1, 3:08 pm, Thomas 'PointedEars' Lahn <PointedE...@web.de>
wrote:
[snip]

>
However, since you are writing about a window, it is more likely that
the popup blocker is blocking the alert window when called from within a

He said he disabled the popup blocker in IE, though I suppose there
could be others running on the user's machine. And what popup blocker
blocks JavaScript alerts?

load event listener. Don't do that anyway.

I agree with that. Better to display the error message at the top of
the page.

Aug 1 '07 #9

Thomas 'PointedEars' Lahn

David Mark wrote:

On Aug 1, 3:08 pm, Thomas 'PointedEars' Lahn <PointedE...@web.de>
wrote:
[snip]
>However, since you are writing about a window, it is more likely that
the popup blocker is blocking the alert window when called from within a

[...] And what popup blocker blocks JavaScript alerts?

IIRC Gecko's (version unknown), when they are triggered via the `load'
event. Had you not crippled the context again, you would have known.
PointedEars
--
Prototype.js was written by people who don't know javascript for people
who don't know javascript. People who don't know javascript are not the
best source of advice on designing systems that use javascript.
-- Richard Cornford, <f8*******************@news.demon.co.uk>

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