Javascript JQM弹出式示例没有'；行不通

尝试学习弹出窗口，发现JQM弹出窗口“对话框”示例不起作用-当我按下按钮“删除页面…”时，什么也没有出现。 我的html正文是：

<div data-role="page" id="page_test1" data-theme="b">

<div data-role="content">
    <a href="#popupDialog" data-rel="popup" data-position-to="window" data-role="button" data-inline="true" data-transition="pop" data-icon="delete" data-theme="b">Delete page...</a>
    </div> <!-- /content -->
</div> <!-- /page -->

<!-- Exactly copied from http://view.jquerymobile.com/1.3.1/dist/demos/widgets/popup/ (sample "Dialog") -->
<div data-role="popup" id="popupDialog" data-overlay-theme="a" data-theme="c" data-dismissible="false" style="max-width:400px;" class="ui-corner-all">
    <div data-role="header" data-theme="a" class="ui-corner-top">
        <h1>Delete Page?</h1>
    </div>

    <div data-role="content" data-theme="d" class="ui-corner-bottom ui-content">
        <h3 class="ui-title">Are you sure you want to delete this page?</h3>
        <p>This action cannot be undone.</p>
        <a href="#" data-role="button" data-inline="true" data-rel="back" data-theme="c">Cancel</a>
        <a href="#" data-role="button" data-inline="true" data-rel="back" data-transition="flow" data-theme="b">Delete</a>
    </div> <!-- content -->
</div>  <!-- popup -->

删除页面？
是否确实要删除此页？
此操作无法撤消

正如您所看到的，我的html部分有一点。

---

您可以在此处找到弹出窗口的这种行为-

弹出窗口必须位于

data role=“page”

容器内

<div data-role="page" id="page_test1" data-theme="b">
    <div data-role="content">   <a href="#popupDialog" data-rel="popup" data-position-to="window" data-role="button" data-inline="true" data-transition="pop" data-icon="delete" data-theme="b">Delete page...</a>

    </div>
    <!-- /content -->
    <!-- Exactly copied from http://view.jquerymobile.com/1.3.1/dist/demos/widgets/popup/ (sample "Dialog") -->
    <div data-role="popup" id="popupDialog" data-overlay-theme="a" data-theme="c" data-dismissible="false" style="max-width:400px;" class="ui-corner-all">
        <div data-role="header" data-theme="a" class="ui-corner-top">
                <h1>Delete Page?</h1>

        </div>
        <div data-role="content" data-theme="d" class="ui-corner-bottom ui-content">
                <h3 class="ui-title">Are you sure you want to delete this page?</h3>

            <p>This action cannot be undone.</p>    <a href="#" data-role="button" data-inline="true" data-rel="back" data-theme="c">Cancel</a>
    <a href="#" data-role="button" data-inline="true" data-rel="back" data-transition="flow" data-theme="b">Delete</a>

        </div>
        <!-- content -->
    </div>
    <!-- popup -->
</div>
<!-- /page -->

删除页面？
是否确实要删除此页？
此操作无法撤消。

---

同时，popup小部件说明中没有关于我们应该在哪里放置popup div的通知