jQuery 确定 $.ajax 错误是否是超时
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Determine if $.ajax error is a timeout
提问by coffeemonitor
I'm utilizing the magic of jQuery.ajax( settings )
.
我正在利用jQuery.ajax( settings )
.
However, I'm wondering if anyone has played with the timeout setting much?
但是,我想知道是否有人玩过超时设置?
I know it's basically for dictating the local time for a request, but can it trigger anything if the timeout is reached? Or does it simply stop listening for a response?
我知道它基本上是为了指定请求的本地时间,但是如果达到超时,它会触发任何事情吗?或者它只是停止监听响应?
Reading the jQuery site, I can see there are no arguments passed, so it seems like a simple setting with one capability. Which is fine.
阅读 jQuery 站点,我可以看到没有传递任何参数,所以这似乎是一个具有一种功能的简单设置。这很好。
But, I'd like to trigger an alert or some function if the timeout is reached. I can see that the error setting doesn't get triggered, in this case.
但是,如果达到超时,我想触发警报或某些功能。在这种情况下,我可以看到错误设置没有被触发。
Here's my snippet:
这是我的片段:
$("form#testform").submit(function(){
var allFormValues = $("form#testform").serialize();
$.ajax({
cache:false,
timeout:8000, // I chose 8 secs for kicks
type:"POST",
url:"someurl.php",
data:allFormValues,
error:function(){ alert("some error occurred") },
success:function(response){ alert(response); }
});
});
Does anyone know how to work more with timeout?
有谁知道如何使用超时进行更多工作?
回答by David Hoerster
If your error event handler takes the three arguments (xmlhttprequest, textstatus, and message) when a timeout happens, the status arg will be 'timeout'.
如果您的错误事件处理程序在超时发生时采用三个参数(xmlhttprequest、textstatus 和 message),则状态参数将为“超时”。
Per the jQuery documentation:
根据jQuery 文档:
Possible values for the second argument (besides null) are "timeout", "error", "notmodified" and "parsererror".
第二个参数(除了 null)的可能值是“超时”、“错误”、“未修改”和“解析器错误”。
You can handle your error accordingly then.
然后您可以相应地处理您的错误。
I created this fiddlethat demonstrates this.
我创建了这个小提琴来演示这一点。
$.ajax({
url: "/ajax_json_echo/",
type: "GET",
dataType: "json",
timeout: 1000,
success: function(response) { alert(response); },
error: function(xmlhttprequest, textstatus, message) {
if(textstatus==="timeout") {
alert("got timeout");
} else {
alert(textstatus);
}
}
});?
With jsFiddle, you can test ajax calls -- it will wait 2 seconds before responding. I put the timeout setting at 1 second, so it should error out and pass back a textstatus of 'timeout' to the error handler.
使用 jsFiddle,您可以测试 ajax 调用——它会在响应前等待 2 秒。我将超时设置设为 1 秒,因此它应该出错并将“超时”的文本状态传回错误处理程序。
Hope this helps!
希望这可以帮助!