onpropertychange event is not fired when you change document location

[alhalayqa]

Hello ,

I have attached the onpropertychange event to my document as :

// the handler function 
 
function propertychangeHandler(){
 
alert('propertychange event...');
 
} 
 
document.onpropertychange=propertychangeHandler;
 
 
// now, when I change the document.location as :
 
document.location="http://www.google.com";
 

the event is not fired, it doesn' t call the handler .
I read the documentation of msdn that this event is applied to document object .


I have IE7 on Window Vista on my machine .


any suggestion ?

thanks ,

[acoder]

If you're trying to detect when the page changes, just use onbeforeunload instead.

[mrhoo]

document.location is a read only string, now deprecated in favor of document.URL

You can't change the url of a document with javascript- only the url that is loaded in window.location, which is apparently what IE is doing.

[alhalayqa]

If you're trying to detect when the page changes, just use onbeforeunload instead.

Ok , but do you think I can catch what the url being assinged to document.location inside the onbeforeunload handler ?

if you look at my example , document.location = "http://www.google.com".
could I know that my document will be overwritten by http://www.google.com ?

thanks .

[alhalayqa]

document.location is a read only string, now deprecated in favor of document.URL

You can't change the url of a document with javascript- only the url that is loaded in window.location, which is apparently what IE is doing.

if I understood you, simply in javascript you can say :
document.location = "http://example.com".

this is an assigment, so document.location is read/write property !!

in any case, and same for the window.location = "http://www.example.com".
why the onpropertychange event is not fired !!

could you please explain more .

thanks .

[mrhoo]

document.location is no longer a property of the document.URL, but an alias for the window's location object.

When you write to it, you are not changing the url of the document-
you are changing the window location to the url of another document .

[alhalayqa]

document.location is no longer a property of the document.URL, but an alias for the window's location object.

When you write to it, you are not changing the url of the document-
you are changing the window location to the url of another document .

ya, that's clear , thanks very much .

[acoder]

Ok , but do you think I can catch what the url being assinged to document.location inside the onbeforeunload handler ?

if you look at my example , document.location = "http://www.google.com".
could I know that my document will be overwritten by http://www.google.com ?

thanks .

That would be window.location.href. I'm not sure if you can, but I doubt it. Why do you need to know what the URL of the next page is?