Php 使用ajax刷新javascript

当我使用ajax在页面上重新加载div时，它可以工作，但当我尝试重新加载脚本时就不行了。我的javascript是动态的，来自数据库，我的div也是动态的。下面是我的代码：

        <ul id="classes">
            <?php
            $email = 'thomas990428@me.com_classes';

            $result = mysqli_query($con,"SELECT * FROM `$email` ORDER BY period"); if (!$result) echo mysqli_error(); else // ok, do your thing.

            $classcount = 1;

            while($row = mysqli_fetch_array($result))
              {

              $period = $row['period'];
              $teacher = $row['teacher'];
              $subject = $row['subject'];
              $subjecto = strtolower($subject);
              $subjecto = str_replace(' ', '', $subjecto);
              $grade = $row['grade'];

              echo "<li id='button" . $classcount . "' class='button' onclick='" . $subjecto . "(),homework" . $classcount . "()'><div class='deletebutton' onclick='deleteclass" . $subjecto . "()'>X</div><span class='course'>" . $classcount . ". " . $subject . "</span></li>\n";

              $classcount += 1;

              }

            ?>
    <script>

        <?php
        $email = 'thomas990428@me.com_classes';

        $result = mysqli_query($con,"SELECT * FROM `$email`");

        while($row = mysqli_fetch_array($result))
          {

          $period = $row['period'];
          $teacher = $row['teacher'];
          $subject = $row['subject'];
          $subjecto = strtolower($subject);
          $subjecto = str_replace(' ', '', $subjecto);
          $grade = $row['grade'];

          echo "function deleteclass" . $subjecto . "() { \n";
          echo "var hi = confirm('Are you absolutely sure you want to permantly delete this class? This cannot be undone.'); \n";
          echo "if (hi==true) \n";
          echo "{ \n";
          echo "document.getElementById('hiddenframe').src='deleteclass.php?class=".$subjecto."';";
          echo "closeedit();";
          echo "refreshclasses();";
          echo "} \n";
          echo "else \n";
          echo "{} \n";
          echo "} \n";

          }

        ?>


    </script>
        </ul>
        <iframe id="hiddenframe"></iframe>

先看评论，然后

在检查代码时，为什么不这样做呢

function deleteClass(subjecto, period, teacher, ...)

及

如果您现在只想让它工作，您可以这样做：

替换：

<div class='deletebutton' onclick='deleteclass" . $subjecto . "()'>X</div>

X

致：

X

并将整个回波部分替换为：

function deleteclass(subjecto){
    var hi = confirm('Are you absolutely sure you want to permantly delete this class? This cannot be undone.');
    if (hi==true)
    {
        document.getElementById('hiddenframe').src='deleteclass.php?class='+subjecto;
        closeedit();
        refreshclasses();
    }
}
</script>

函数删除类（subjecto）{
var hi=confirm（'您绝对确定要永久删除此类吗？此操作无法撤消'）；
如果（hi==真）
{
document.getElementById（'hiddenframe'）.src='deleteclass.php？class=''+subjecto；
closeedit（）；
刷新类（）；
}
}
您是否尝试向页面添加新的
标记？请看。您可以按照Aiias所说的做，也可以使用静态JS函数和从AJAX返回的动态变量。但不幸的是，您不能在客户端单独使用动态“javascript+php脚本”。它看起来不像是在函数中使用句点或教师，但我添加它们只是为了给您一个想法。对不起，我对javascript有点陌生，那么我如何从参数中提取“subjectto”并在
document.getElementById（'hiddenframe'）中使用它呢.src='deleteclass.php？class=
？
<div class='deletebutton' onclick='deleteclass(" . $subjecto . ")'>X</div>

function deleteclass(subjecto){
    var hi = confirm('Are you absolutely sure you want to permantly delete this class? This cannot be undone.');
    if (hi==true)
    {
        document.getElementById('hiddenframe').src='deleteclass.php?class='+subjecto;
        closeedit();
        refreshclasses();
    }
}
</script>