error handling - window.onerror in Safari ( Javascript ) - Stack Overflow

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I create an error message its working with IE and Mozila. Not woking with Safari, Chrome and Opera.

But I need to use it. Please give me right way for doing it.

<script language="javascript" type="text/javascript">
window.onerror = function(msg, url, line)
{
    document.write("Message\t = "+msg + "<br/>Location\t = " + url + "<br/>Line No.\t = " + line + "<br/>Error No.\t = " + this.err.number);
}
this.err = Error(12,"My Own Error");
throw this.err;
</script>

==========================================
Internet Explorer:

My Error
Message = My Own Error
Location = http://localhost/practice/JavaScript/window.errors.php
Line No. = 8
Error No. = 12 
================================================
Mozilla FireFox:

My Error
Message = Script error.
Location = My Own Error
Line No. = 0
Error No. = undefined 
=====================================================
Safari, Chrome, Opera:

My Error

look the code Mozilla give wrong information. what I do?

I create an error message its working with IE and Mozila. Not woking with Safari, Chrome and Opera.

But I need to use it. Please give me right way for doing it.

<script language="javascript" type="text/javascript">
window.onerror = function(msg, url, line)
{
    document.write("Message\t = "+msg + "<br/>Location\t = " + url + "<br/>Line No.\t = " + line + "<br/>Error No.\t = " + this.err.number);
}
this.err = Error(12,"My Own Error");
throw this.err;
</script>

==========================================
Internet Explorer:

My Error
Message = My Own Error
Location = http://localhost/practice/JavaScript/window.errors.php
Line No. = 8
Error No. = 12 
================================================
Mozilla FireFox:

My Error
Message = Script error.
Location = My Own Error
Line No. = 0
Error No. = undefined 
=====================================================
Safari, Chrome, Opera:

My Error

look the code Mozilla give wrong information. what I do?

• javascript
• error-handling

Share Improve this question Follow edited Jun 22, 2010 at 12:03 Andy E 345k8686 gold badges482482 silver badges451451 bronze badges asked Jun 22, 2010 at 11:50 Karandeep SinghKarandeep Singh 1,27966 gold badges2222 silver badges3434 bronze badges 1

• 2 (Reference) quirksmode/dom/events/error.html the event is indeed very badly supported on IE and FF; not sure whether there is anything that can be done about it. – Pekka Commented Jun 22, 2010 at 12:08

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1 Answer 1

Sorted by: Reset to default 4

Opera doesn't support window.onerror at all. Chrome supports it, but not on errors that you throw yourself. This is also true of Internet Explorer when using Error objects other than Error(), e.g. TypeError(). Chrome also doesn't provide the line and file arguments.

You should correctly catch any exceptions you're going to throw with a try...catch statement, instead of relying on window.onerror.

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