我被困住了.我在玩聚合物，但无法管理抽屉面板上的togglePanel函数，我的代码如下所示:
I am stuck. I am playing around with polymer but I do not manage to call the togglePanel function on the drawer panel and my code looks like this:
<!DOCTYPE html> <html> <head> <!-- 1. Load platform.js for polyfill support. --> <script src="bower_components/platform/platform.js"></script> <!-- 2. Use an HTML Import to bring in the element. --> <link rel="import" href="bower_components/core-ajax/core-ajax.html"> <link rel="import" href="bower_components/core-drawer-panel/core-drawer-panel.html"> <link rel="import" href="bower_components/core-toolbar/core-toolbar.html"> <link rel="import" href="bower_components/core-icon-button/core-icon-button.html"> </head> <body> <script> function openDrawer() { alert("fuck"); var drawer = document.getElementById("main-drawer"); drawer.togglePanel(); } </script> <core-drawer-panel id="main-drawer"> <div drawer style="background-color: #FF0000;"> </div> <div main style="background-color: #00FF00;"> <core-toolbar style="background-color: #8888FF;"> <core-icon-button icon="menu" onclick="openDrawer()" on-tap="openDrawer()"></core-icon-button> <div flex>PageTitle</div> </core-toolbar> </div> </core-drawer-panel> </body> </html>当我单击菜单按钮时，该函数被调用，但没有其他反应，我确保使用警报.
The function gets called when I click the menu button but nothing more happens, i made sure using an alert.
我想这与影子DOM有关，但我不确定.我希望有人知道如何调用它的功能.
I guess it has something to do with the shadow DOM but I am not sure. I hope somebody knows how to call its function.
推荐答案core-drawer-panel始终保持打开状态.默认情况下，除非您使用的是平板电脑或更小设备，否则它将通常保持打开状态.
core-drawer-panel stays open all the time if the window size is less than responsiveWidth. By default it will generally stay open unless you are on a tablet device or smaller.
如果您将responsiveWidth设置得很高，则可以更改行为，使其仅在需要时打开.
If you set responsiveWidth really high, you can alter the behavior so it only opens on demand.
<core-drawer-panel id="main-drawer" responsiveWidth="900em">jsbin/zorufa/2/edit
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聚合物导航抽屉面板上的调用功能
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