如何从 jQuery.ajax 获取响应状态代码? [英] How to get response status code from jQuery.ajax?
问题描述
在以下代码中，我所做的只是从 jQuery.ajax 调用中获取 HTTP 响应代码.然后，如果代码是 301(永久移动)，则显示位置"响应头:
In the following code, all I am trying to do is to get the HTTP response code from a jQuery.ajax call. Then, if the code is 301 (Moved Permanently), display the 'Location' response header:
<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
<head>
<title>jQuery 301 Trial</title>
<script src="http://code.jquery.com/jquery-1.5.1.min.js"></script>
<script type="text/javascript">
function get_resp_status(url) {
$.ajax({
url: url,
complete: function (jqxhr, txt_status) {
console.log ("Complete: [ " + txt_status + " ] " + jqxhr);
// if (response code is 301) {
console.log ("Location: " + jqxhr.getResponseHeader("Location"));
// }
}
});
}
</script>
<script type="text/javascript">
$(document).ready(function(){
$('a').mouseenter(
function () {
get_resp_status(this.href);
},
function () {
}
);
});
</script>
</head>
<body>
<a href="http://ow.ly/4etPl">Test 301 redirect</a>
<a href="http://cnn.com/not_found">Test 404 not found</a>
</body>
</html>
有人能指出我哪里出错了吗?当我在 Firebug 中检查jqxhr"对象时，我找不到状态代码，也找不到Location"响应标头.我在完成"的最后一行设置了断点.
Can someone point out where I am going wrong? When I check the 'jqxhr' object in Firebug, I can't find the status code, nor the 'Location' response header. I set the breakpoint on last line of 'complete'.
非常感谢.
推荐答案
我看到 jqXhr 对象上的状态字段，这里是一个摆弄它的工作:
I see the status field on the jqXhr object, here is a fiddle with it working:
http://jsfiddle.net/magicaj/55HQq/3/
$.ajax({
//...
success: function(data, textStatus, xhr) {
console.log(xhr.status);
},
complete: function(xhr, textStatus) {
console.log(xhr.status);
}
});
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