微信小程序如何使用action-sheet弹出底部菜单

<button type="default" bindtap="actionSheetTap">弹出action sheet</button>
<action-sheet hidden="{{actionSheetHidden}}" bindchange="actionSheetbindchange">
  <block wx:for-items="{{actionSheetItems}}" wx:key="{{txt}}">
    <action-sheet-item bindtap="bind{{item.bindtap}}">{{item.txt}}</action-sheet-item>
  </block>
  <action-sheet-cancel class="cancel">取消</action-sheet-cancel>
</action-sheet>
<view>
  提示：您选择了菜单{{menu}}
</view>

Page({
 data:{
  // text:"这是一个页面"
  actionSheetHidden:true,
  actionSheetItems:[
   {bindtap:'Menu1',txt:'菜单1'},
   {bindtap:'Menu2',txt:'菜单2'},
   {bindtap:'Menu3',txt:'菜单3'}
  ],
  menu:''
 },
 actionSheetTap:function(){
  this.setData({
   actionSheetHidden:!this.data.actionSheetHidden
  })
 },
 actionSheetbindchange:function(){
  this.setData({
   actionSheetHidden:!this.data.actionSheetHidden
  })
 },
 bindMenu1:function(){
  this.setData({
   menu:1,
   actionSheetHidden:!this.data.actionSheetHidden
  })
 },
 bindMenu2:function(){
  this.setData({
   menu:2,
   actionSheetHidden:!this.data.actionSheetHidden
  })
 },
 bindMenu3:function(){
  this.setData({
   menu:3,
   actionSheetHidden:!this.data.actionSheetHidden
  })
 }
})