> -----Original Message----- > From: Dan G. Switzer, II [mailto:[EMAIL PROTECTED] > Sent: Wednesday, February 01, 2006 12:43 PM > To: CF-Talk > Subject: RE: Set session variables in JS? > > Jim's technique is crutch of it, but instead of actually putting an <img > /> > tag in your code, you can use something like: > > var oImgGateway = new Image(); > oImgGateway.src = "someurl.cfm?passParam=here"; > > This will create an async event that will load the URL in the src property > to the server. > > The caveat with this approach is that you have no way to really interact > with the server--basically you can only use it to pass information to the > server, you won't be able to retrieve information from the server using > that > technique.
A (very minor) additional point: this won't work from some older browsers (Netscape 3.0 for example). But it should work fine for all browsers that people actually use. ;^) You can also get away with some of the same kind of thing using the DOM - You could add the image to the page programmatically and thus allow for bi-directional communication via cookies as in my article. You might instead add a script element to the page (it's "source" attribute would reference a CF page) which would, perhaps, return some script that informs you of the results. This isn't as nice as the cookie solution since it's a bit hard to manage but you can send any amount of information. JavaScript is such an insanely powerful tool. Jim Davis ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~| Message: http://www.houseoffusion.com/lists.cfm/link=i:4:230987 Archives: http://www.houseoffusion.com/cf_lists/threads.cfm/4 Subscription: http://www.houseoffusion.com/lists.cfm/link=s:4 Unsubscribe: http://www.houseoffusion.com/cf_lists/unsubscribe.cfm?user=89.70.4 Donations & Support: http://www.houseoffusion.com/tiny.cfm/54
