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I am trying to make a link where when it is clicked, it goes to the site it is supposed to, but it also runs a cgi script. I have found different examples, but I still don’t fully understand it.
In essence, I have two questions:
If you want to access it from JavaScript then it has to be on the same origin (i.e. hostname and port) as the page the JavaScript is running in.
You can either forget JavaScript, have a regular link and then have the CGI perform a 302 redirect, or you can use Ajax.
Beware of timing issues. It is possible for the browser to go to the next URL before it gets around to making the Ajax request. A redirect would probably be a better approach.