插入笑脸文本并播放图像

拜托伙计们，我有一个问题。我创建了一个页面，当单击图像时，可以在文本区域中插入笑脸文本，当单击提交按钮时，通过ajax方法提交表单，这是运行良好的代码：

    <form id="my_form">
    <textarea name="comment" id="comment" class="open" placeholder="Comment..."></textarea><br>
    <input type="hidden" id="post" name="post" value="<?php echo $my_id; ?>" />
    <span id="form_span"><input type="submit" name="submit" id="submit" class="comment_send" value="COMMENT" /></span><div style="display:none;" id="form_progress"><img src='progress-dots.gif' /></div>
    <div id="form_error" style="display:none;"><a href="javascript:;" style="float:right;margin:5px 5px;color:#fff;text-decoration:none;" onclick="document.getElementById('form_error').style.display='none'">x</a>Please make a Comment!</div>
    <div id="emoji" class="emoji">
    <a href="javascript:;" title=":glad;"><img title="glad" border="0" src="emojis/smiley2.png" /></a>
    <a href="javascript:;" title=":joy;"><img title="joy" border="0" src="emojis/smiley3.png" /></a>
    <a href="javascript:;" title=":jeer;"><img title="jeer" border="0" src="emojis/smiley43.png" /></a>
    <a href="javascript:;" title=":angry;"><img title="angry" border="0" src="emojis/smiley76.png" /></a>
</div>
    </form>
<script src="js/jquery.js"></script>
<script type="text/javascript">
        $(document).ready(function() {
            $('#my_form').submit(function(e) {
                e.preventDefault();
                if($("#comment").val() == "")
                  {
                      $('#comment').focus();
                    document.getElementById('form_error').style.display='block';
                  } else {
                $.ajax({
                    method: "GET",
                    url: "comment_send.php",
                    data: $(this).serialize(),
                    beforeSend: function(){
                        document.getElementById('form_error').style.display='none';
                        document.getElementById('form_progress').style.display='block';
                        $('#form_span').html("<input type='submit' name='submit' id='submit' class='disable_comment' value='COMMENT' disabled/>");
                    },
                    success: function(status) {
                        $('#comment').val('');
                        document.getElementById('form_progress').style.display='none';
                        $('#form_span').html("<input type='submit' name='submit' id='submit' class='comment_send' value='COMMENT' />");
                    }
                });
                  }
            });
        });
    </script>
//to insert the emoji texts in the text area
    <script type="text/javascript">
        $('#emoji a').click(function () {
   var smiley = $(this).attr('title');
   ins2pos(smiley, 'comment');
});
function ins2pos(str, id) {
   var TextArea = document.getElementById(id);
   var val = TextArea.value;
   var before = val.substring(0, TextArea.selectionStart);
   var after = val.substring(TextArea.selectionEnd, val.length);
   TextArea.value = before + str + after;
   setCursor(TextArea, before.length + str.length);
}
function setCursor(elem, pos) {
   if (elem.setSelectionRange) {
      elem.focus();
      elem.setSelectionRange(pos, pos);
   } else if (elem.createTextRange) {
      var range = elem.createTextRange();
      range.collapse(true);
      range.moveEnd('character', pos);
      range.moveStart('character', pos);
      range.select();
   }
}
    </script>

我还使用 jquery .load 函数在同一页面上显示评论：

    <div id="comment_display" style="width:250px;height:500px;overflow-y:auto;"></div>
    <script type="text/javascript">
        $(document).ready(function() {
            setInterval(function () {
                $('#comment_display').load('comment_display.php')
            }, 1000);
        });
    </script>

这是comment_display.php页面：

<?php
include 'connect.php';
$query = mysqli_query($con, "SELECT * FROM comments ORDER BY id DESC");
while($row = mysqli_fetch_array($query)){
    $comment = $row['comment'];
    echo "<p>".$comment."</p>";
    }
    ?>

所有这些代码都运行良好，但现在我的问题是我想替换表情符号文本，以自己的图像显示，所以我使用以下代码：

        <script type="text/javascript">
// for :glad;
$("body").html($("body").html().replace(/:glad;/g,'<img src="emojis/smiley2.png" />'));
// for :joy;
$("body").html($("body").html().replace(/:joy;/g,'<img src="emojis/smiley3.png" />'));
// for :jeer;
$("body").html($("body").html().replace(/:jeer;/g,'<img src="emojis/smiley43.png" />'));
// for :angry;
$("body").html($("body").html().replace(/:angry;/g,'<img src="emojis/smiley76.png" />'));
    </script>

但是当我添加最后一个javascript代码来替换表情符号文本时，将表情符号文本插入文本区域的表情符号图像停止工作，如果我单击它们，它不会做任何事情