javascript - 通过 JQuery $.post 将 JavaScript 数组传递给 PHP

Question

这段代码获取所有表单变量并通过 AJAX 将它们发送到 PHP 脚本。但我希望 PHP 脚本的计算结果通过 JSON 编码数组返回到 javascript，格式为 "post":{"uname":"someNamefromForm","email":"someEmail","fname":"namefromtheform","lname":"lastnamefromform" 我现在得到的输出是“uname=e&email=e&fname=e&lname=euname”..这是我想要在页面底部显示的 JSON 数组，用于调试目的。谁能告诉我如何格式化它

这是我的 HTML 表单

  <div id="wrapper">
      <h2> Validation with AJAX,JQuery,JSON and PHP</h2>
          <div class="form-container">    
              <span id="ajax-message"></span>

              <form id="ajax-form" onsubmit="return false;">
                  <p class="legend">All fields marked with an asterisk are required.</p>

                  <fieldset>
                      <legend>User Details</legend>
                      <div>
                        <label for="uname">Username <em>*</em></label> 
                        <input id="uname" type="text" name="uname" value=""  />
                      </div>
                      <div>
                        <label for="email">Email Address <em>*</em></label> 
                        <input id="email" type="text" name="email" value="" />
                      </div>
                      <div>
                        <label for="fname" class="error">First Name <em>*</em></label> 
                        <input id="fname" type="text" name="fname" value="" size="50" class="error"/>
                        <p class='note'>All error message go here </p> 
                      </div>
                      <div>
                        <label for="lname">Last Name <em>*</em></label> 
                        <input id="lname" type="text" name="lname" value="" size="50" />
                      </div>
                  </fieldset>

                  <div class="buttonrow">
                      <input type="submit" value="Submit This Form via AJAX" class="button" />  
                      <input type="button" value="Start Again" class="button" />
                      <a >Refresh this Page</a>
                  </div>
              </form>
          </div> 
      <h3>JSON Array</h3>
      <pre id='debug'></pre>
  </div>

这是我的 JavaScript

$("#ajax-form").submit(function(){
          var variableToSend = $(this).serialize();
          $.post(
            'ajaxformval_post.php', 
            {variable: variableToSend}, 
            function(data){$("#debug").html(data)},
            "json"
          );
      })

这是 php

<?php
    $variable = $_POST['variable'];

    echo json_encode($variable);

    /*$json = array(
        'booleanFlag' => TRUE,
        'someText' => "AJAX should be renamed AJAJ",
        'anArrayOfData' => array('name' => 'Mickey', 'ears' => 'very Big') 
    );*/

 ?>

Answer 1

您可以像这样直接发送序列化变量:

$("#ajax-form").submit(function(){
      var variableToSend = $(this).serialize();
      $.post(
        'ajaxformval_post.php', 
         variableToSend, 
        function(data){$("#debug").html(data)},
        "json"
      );
  });

然后在服务器端简单地输出 json_encoded 的帖子:

<?php
    $variable = $_POST;

    echo json_encode($variable);
 ?>