javascript - Determine if connection is dead on clientside

Question

I have a site which have a div in updatepanel, which is refreshed every 10 seconds, and I pass string result to div. If connection is dead, i get error that server is unavailable, which should not happen.

My question is, how to check clientside if connection is down, so I can just pass empty string to that div, and that page remains.

Thanks.

Answer 1

看到这个：

检查是否存在使用 Javascript 的 Internet 连接？

如果您需要立即解决方案，可以使用以下方法：

var online = navigator.onLine;