切换工具栏时对应的工作区显示内容也不同 连线状态 ![](https://git.kancloud.cn/repos/chong123/js-ctrl/raw/cf318b2802cf0174ec4a46a9ec6a7fa936d6b902/images/screenshot_1513691256091.png?access-token=fa800862e26a78b1326b1fb18c415048) 动画状态 ![](https://box.kancloud.cn/29be0591c5458f819905bc04564854ba_1078x712.png)