无法弄清楚为什么$ .ajax调用中的php脚本失败 [英] Can't figure out why php script failing on $.ajax call
问题描述
这是我的jQuery脚本:
Here's my jQuery script:
$.ajax({
type: 'POST',
url: 'zipCodes.php',
data: searchZipCode,
cache: false,
success: function(response) {
alert ('response from db search: ' + response);
},
error: function(response) {
console.log(response);
alert('Query failed, php script returned this response: ' + response);
}
});
上面的脚本位于表单所在的html文件的head标记中.php脚本与html文件位于同一文件夹中.
The above script is in the head tag of the html file the form is in. The php script is in the same folder as the html file.
这是表格:
<form id="frmZipCodeSearch" action="">
<label for="txtZipCodeSearch">Enter a zip code</label>
<input type="text" id="txtZipCodeSearch" length="10" maxlength="5" />
<input type="submit" id="btnSubmitZipCodeSearch" />
</form>
我还验证了"searchZipCode"具有值.
I also have verified that "searchZipCode" has a value.
每次运行搜索时，我都会从ajax调用的错误部分得到警报，该消息说
Every time I run the search I get the alert from the error part of the ajax call, which says
查询失败，php脚本返回以下响应:[object Object]
Query failed, php script returned this response: [object Object]
，这在控制台中显示:
对象{readyState:0，setRequestHeader:函数，getAllResponseHeaders:函数，getResponseHeader:函数，overrideMimeType:函数……}
Object {readyState: 0, setRequestHeader: function, getAllResponseHeaders: function, getResponseHeader: function, overrideMimeType: function…}
我尝试将php脚本剥离为一个回显.我没有在服务器上使用脚本在文件夹中生成任何php错误日志.我所做的任何改变似乎都不会给我带来不同的结果.除了一个例外:
I've tried stripping the php script down to just an echo. I'm not getting any php error logs generated in the folder with the script on the server. Nothing I change seems to give me a different result. With one exception:
我唯一得到不同结果的是，当我剥离ajax并将php脚本移动到具有表单的文件中并执行常规" html表单POST方法时.那行得通.但是我不认为，当php是另一个文件时，路径是错误的，因为在控制台中找不到找不到文件".
The only time I got a different result was when I stripped out the ajax and moved the php script to the file with the form and did a "regular" html form POST method. That worked. But I don't think the path is wrong when the php is a different file because I'm not getting a "file not found" in the console.
我在这里想念什么?
[其他信息] 为了回应hek2mgl的回答，我在错误响应中添加了xhr并在控制台中获得了更多信息:
[Additional Info] In response to hek2mgl's answer, I added xhr to the error response and did get some more info in the console:
Uncaught ReferenceError: xhr is not defined zipCodeSearch.html:57
$.ajax.error zipCodeSearch.html:57
l jquery-1.8.3.min.js:2
c.fireWith jquery-1.8.3.min.js:2
T jquery-1.8.3.min.js:2
r jquery-1.8.3.min.js:2
我正在使用的所有其他jQuery都可以正常工作，但这是我第一次亲自使用v1.8.3.
All other jQuery I'm using is working fine, but this is the first time I've used v1.8.3 myself.
[答案-信用hek2mgl] 正如hek2mgl在我们疯狂的讨论中所解释的，我提交了两次表单，因为ajax调用位于表单按钮的click事件之内.
[Answer - credit hek2mgl] As hek2mgl explained in our crazy-long discussion, I was submitting the form twice, because the ajax call was within the click event of the form's button.
此问题的解决方法是将ajax调用从click事件移到其自己的函数中，并在我的客户端验证之后，调用ajax函数并添加"return false;".在函数调用之后.
The fix for this was to move the ajax call out of the click event into its own function, and after my client-side validation, call the ajax function and add "return false;" after the function call.
推荐答案
$.ajax错误回调的定义如下:
The $.ajax error callback is defined as follows:
类型:函数(jqXHR jqXHR，字符串textStatus，字符串errorThrown)
Type: Function( jqXHR jqXHR, String textStatus, String errorThrown )
您已经转储了整个jqXHR对象.与成功函数不同，重发文本本身不是错误回调的参数.要检索响应文本(如果有)，请使用以下命令:
You've dumped the whole jqXHR object. Unlike the success function, the respone text itself is not a param of the error callback. To retrieve the response text (if any) use this:
error: function(xhr) {
var response = xhr.responseText;
console.log(response);
var statusMessage = xhr.status + ' ' + xhr.statusText;
var message = 'Query failed, php script returned this status: ';
var message = message + statusMessage + ' response: ' + response;
alert(message);
}
这篇关于无法弄清楚为什么$ .ajax调用中的php脚本失败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！
