$。员额没有发布数据

本文介绍了$。员额没有发布数据的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述

您好，这是我的$ C $下page.php

hi this is my code for page.php

<?php session_start(); ?> <script type="text/javascript" src="js/jquery-1.8.2.js"></script> <script type="text/javascript" src="js/jquery.colorbox.js"></script> <script type="text/javascript" src="js/new-landing.js"></script> <script> var ans1 = "home"; function aa(){ $.post("ajax.php", { "ans": "test" }, function(data){ alert("Posted"); }, "html"); }; </script> <a href="#" id="q1" onClick="javascript:aa();" >click</a>

而这正是我想看看我的数据公布。

and this is where i want to see if my data is posted.

<?php session_start(); $te = $_POST['ans']; $_SESSION['demo'] = $te; echo "<pre>".print_r($_SESSION,'/n')."</pre>"; ?>

当我点击锚标记。显示警告框。但是当我刷新ajax.php页面。它显示了一个error..Notice：未定义指数：ANS在

when i click the anchor tag. the alert box is shown. but when i refresh the ajax.php page. it shows an error..Notice: Undefined index: ans in

C:\xampp\htdocs\healthqueens\hello\ajax.php on line 3

和会话的打印也是空的。 阵列 （     [试玩] =＆GT; ） 请，如果任何人都可以告诉我的错误。

and the print of session is also empty. Array ( [demo] => ) Please if anyone can show me the mistake.

推荐答案

$。交和 $。获得是的更有条理只是简写 $。阿贾克斯（），所以我使用后者preFER。额外的结构让我直。

$.post and $.get are just shorthand versions of the more structured $.ajax(), so I prefer using the latter. The additional structure keeps me straight.

既然你无论如何使用jQuery，我会重新构造你的code是这样的：

Since you are using jQuery anyway, I would re-structure your code like this:

$('#q1').click(function() { var test = "Hello there"; $.ajax(function() { type: "POST", url: 'ajax.php', data: 'ans=' +test+ '&anothervarname=' + anothervarvalue, success: function(recd_data) { alert('Rec'd from PHP: ' + recd_data ); } }); });

注意数据：线作示例，不与你的code匹配 - 只是显示你如何通过传递变量到PHP端

Note that the data: line is for example purposes and does not match with your code -- just showing you how to pass variables over to the PHP side.

当然，上面包括去除内嵌的JavaScript - 不是一个好主意 -​​ 从你的锚标记HTML，是这样的：

Of course, the above includes removing the inline javascript -- never a good idea -- from your anchor tag HTML, thus:

<a href="#" id="q1" >click</a>

此外，在PHP端，你可以验证事情都是由在顶部增加了测试工作。与数据匹配：在这个例子中的AJAX code线，就成了这个样子：

Also, on the PHP side, you can verify that things are working by adding a test at the top. Matching with the data: line in the example AJAX code, it would look like this:

ajax.php

<?php $a = $_POST['ans']; $b = $_POST['anothervarname']; $response = '<h1>Received at PHP side:</h1>'; $response .= 'Variable [ans] has value: ' . $a . '<br>'; $response .= 'Variable [anothervarname] has value: ' . $b . '<br>'; echo $response;

重要提示：请注意使用回声，不是返回，以发送回值到AJAX脚本

Important: Note the use of echo, not return, to send values back to the AJAX script.

另外请注意，您必须处理的东西，从PHP的在AJAX 返回成功：函数仅。如果您需要访问成功的数据之外的：函数，那么你能坚持数据到一个隐藏的＆LT;输入类型=隐藏 ID =myHiddenInput＆GT; 元素，像这样的：

Also note that you must deal with the stuff returned from PHP in the AJAX success: function ONLY. If you need access to that data outside of the success: function, then you can stick the data into a hidden <input type="hidden" id="myHiddenInput"> element, like this:

success: function(recd_data) { $('#myHiddenInput').html(recd_data); }

下面是简单的AJAX建设一些额外的例子：

Here are some additional examples of simple AJAX constructions:

A简单的例子

More复杂的例子

填充下拉2的基础上选择的下拉1