JAVASCRIPT-jQuery-将值插入输入字段

Question

我想知道为什么这段代码对我不起作用。我想将来自数据库的值附加到此提交按钮的输入字段中，因为我想将其发送回数据库中的另一个表。谢谢！

  </div>
        <form>
         <input type="input"  value="'+ jobpost.jobID+'" id="jobID"/> 
         <br>
          <button type="submit" id="submit3" name="submit3" 
         onclick="myFunctionjobStatus();">Submit</button></form></div>

我正在使用以下ajax帖子将数据发送到我的php文件中，以输入数据库。请参见下面。

 function myFunctionjobStatus() {
     var jobID = document.getElementById("jobID").value;

  //AJAX code to submit form.
       $.ajax({
        type: "POST",
        url: "http://localhost:8888/EduSubOct/jobstatus.php",
        data: { userEmail: localStorage.getItem("email"), jobID: 
        jobID}, 
        cache: false,
        success: function(html) {
            alert("Request Sent");

        }
      });

  }

php文件-

  <?php



 // Selecting Database 

   include_once 'dbh.php';

  /Here we fetch the data from the URL that was passed from our HTML 
  form
$userEmail = $_POST['userEmail'];
$jobID = $_POST['jobID'];


   $sql =  "INSERT INTO jobStatus (email, jobID) VALUES 
('$userEmail','$jobID');";

   mysqli_query($conn, $sql);
 ?>