问题:XMLHttpRequest - 处理服务器连接丢失 [英] Problem: XMLHttpRequest - handle server connection lost

问题描述

我使用XMLHttpRequest向服务器发出同步请求而服务器不可用的情况如何处理?

How do I handle the scenario where I making a synchronous request to the server using XMLHttpRequest and the server is not available?

xmlhttp.open("POST","Page.aspx",false);
xmlhttp.send(null);

现在这种情况会导致 JavaScript 错误:系统找不到指定的资源"

Right now this scenario results into a JavaScript error: "The system cannot locate the resource specified"

推荐答案

好的，我用 try...catch around xmlhttprequest.send 解决了

Ok I resolved it by using try...catch around xmlhttprequest.send

:

xmlhttp.open("POST","Page.aspx",false);              
       try
       {
       xmlhttp.send(null);
       }
       catch(e)
       {
            alert('there was a problem communicating with the server');
       }       

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