JavaScipt: Look before you link?
Eric Losby
Does anyone know if it is possible to "look before you link" to another
page?
Can I use JavaScript to test for the existence of a web document somehow
using
window.location.href?
Thanks.
Eric
gel...@govst.edu
htor...@novice.uwaterloo.ca
Eric Losby (gel...@govst.edu) wrote:
:
:
: Does anyone know if it is possible to "look before you link" to another
: page?
: Can I use JavaScript to test for the existence of a web document somehow
: using
: window.location.href?
I don't see how to do this efficiently in Javascript...
If you can, you should better use a cgi script, giving a HEAD request to
the http server, then either send a location: line, either display an
error page..
--
Henri Torgemane http://www.undergrad.math.uwaterloo.ca/~htorgema/
Never let your sense of morals prevent you from doing what is right.
-- Salvor Hardin, "Foundation"
Kreme
htor...@novice.uwaterloo.ca wrote in article
<E26r3...@novice.uwaterloo.ca>...
> Eric Losby (gel...@govst.edu) wrote:
> : Does anyone know if it is possible to "look before you link" to another
> : page?
> : Can I use JavaScript to test for the existence of a web document
somehow
> : using
> : window.location.href?
> If you can, you should better use a cgi script, giving a HEAD request to
> the http server, then either send a location: line, either display an
> error page..
couldn't you attempt to load the page in a new window and check for an
error condition? if no error, close the current window so the new window
replaces it. It seems this would work.
htor...@novice.uwaterloo.ca
Kreme (kr...@worldnet.att.net) wrote:
: htor...@novice.uwaterloo.ca wrote in article
It would probably be better to use a very small ( hidden ) frame to do this.
The only problem would be to know when a loaded page is an error message
from the server or the regular page...
If you have access to the source of the page, you can simply set a javascript
property in the document.. If not, I don't really know how to do this reliably..