两件事情，首先你有一个额外的} 在脚本的末尾。

Two things, first you have an extra } at the end of your script.

二，手风琴内容不正确加载，因为手风琴的DOM元素是尚未加载（它们在你的AJAX调用加载），所以把下面的 SubMenuItemContent.php 文件：

Second, the accordion content isn't loaded correctly because the accordion DOM elements are not yet loaded (they are loaded in your AJAX call), so put the following your SubMenuItemContent.php file:

<script>
jQuery(document).ready(function($) {   

 $('.accordion').accordion({
  heightStyle: "content",
  active: false,
  collapsible: true
 });

})
</script>

要初始化加载的手风琴。

to init the accordion that is loaded.

另外，您可以尝试移动手风琴（）打电话给你的成功回调里面，像这样：

Alternatively you could try moving the accordion() call inside your success callback like so:

success: function(result) {
 menuItemContent.html(result);
 $('.accordion').accordion({
  heightStyle: "content",
  active: false,
  collapsible: true
 });
}

不过，我有更多的成功与previous方法，无论出于何种原因。

But I've had more success with the previous method, for whatever reason.