getResponseHeader不是函数 [英] getResponseHeader is not a function

问题描述

我需要从另一个页面获取值.但是我收到以下代码此错误.我该如何解决?

I need to get a value from another page. But I get this error with the following code. How can I fix it?

    $(document).ready(function() { 
        $("[name='submit']").click(function() { 
            $.ajax({
                type: "POST",
                data: $(".form-signup").serialize(),
                url: "external.asp", 
                success: function(output) { 
                alert(output.getResponseHeader("Content-Length"));
},
                error: function(output) {
                $('.sysMsg').html(output);
                }
            }); 
        }); 
    }); 

推荐答案

首先，您的设置对象格式不正确，success函数未终止.

First, your settings object is not well formed, the success function is not terminated.

似乎您正在使用jQuery 1.3.x，如果使用的话，$.ajax函数本身将返回XHR对象:

Seems that you are using jQuery 1.3.x, if so, the $.ajax function itself returns the XHR object:

$(document).ready(function() { 
    $("[name='submit']").click(function() { 
        var xhr = $.ajax({
            type: "POST",
            data: $(".form-signup").serialize(),
            url: "external.asp", 
            success: function(output, status) { 
              alert(xhr.getResponseHeader("Content-Length"));
            },
            error: function(output) {
              $('.sysMsg').html(output);
            }
        }); 
    }); 
});

对于jQuery 1.4+版本:

For jQuery 1.4+ versions:

然后，当传递success回调函数执行的三个参数(success(data, textStatus, XMLHttpRequest))时，您需要在 XmlHttpRequest 对象上调用getResponseHeader，第三个参数:

Then, when the success callback its executed three arguments are passed (success(data, textStatus, XMLHttpRequest)), you need to call the getResponseHeader on the XmlHttpRequest object, the third argument:

$(document).ready(function() { 
    $("[name='submit']").click(function() { 
        $.ajax({
            type: "POST",
            data: $(".form-signup").serialize(),
            url: "external.asp", 
            success: function(output, status, xhr) { 
              alert(xhr.getResponseHeader("Content-Length"));
            },
            error: function(output) {
              $('.sysMsg').html(output);
            }
        }); 
    }); 
});

这篇关于getResponseHeader不是函数的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！