Sign Up to our social questions and Answers Engine to ask questions, answer people’s questions, and connect with other people.
Login to our social questions & Answers Engine to ask questions answer people’s questions & connect with other people.
Lost your password? Please enter your email address. You will receive a link and will create a new password via email.
Please briefly explain why you feel this question should be reported.
Please briefly explain why you feel this answer should be reported.
Please briefly explain why you feel this user should be reported.
I recently received a request to determine if a user’s browser has pre-fetching enabled. I’ve searched around, but I’ve come up empty. Any thoughts on how to accomplish this task? I’ve watched traffic in the header and I don’t see anything in the request that would indicate pre-fetching has been enabled.
Put
<link href="myTester.xxx" rel="prefetch" />in the head.In whatever handles for myTester.xxx (which would hence more likely by myTester.php, myTester.aspx, etc.) set a flag in the session (if you’re already using sessions and hence there’s no more penalty for doing so) or set a cookie. Make the response v. small (empty would be fine).
On onload, set a delayed (use
setTimeout) attempt to retrieve an XML or JSON file from myTesterResult.xxx which has a different result depending upon that session value or cookie.Alternatively, if you don’t need it to be reacted to on that page, there’s no need for any client-side script at all, subsequent server-side script will be able to use the session or cookie as appropriate.