1.<navigator url="../test/test"><button>点我可以切换可以返回</button></navigator>

2.<button bindtap="chageToTest">切换页面可以返回</button>
 chageToTest:function(){
   wx.navigateTo({
     url: \'../time/time\',
   })
 },

3.<button bindtap="chageToTest2">切换页面不能返回</button>
 chageToTest2:function(){
    wx.redirectTo({
      url: \'../test/test\',
    })
  } , 

4.<button bindtap="chageToTest3">切换底部tabbar页面</button>
//可以跳转tabbar栏的页面
  chageToTest3: function () {
    wx.switchTab ({
      url: \'../read/read\',
    })
  }, 

<button bindtap="tip">提示框</button>
//提示框
  tip:function(){
    //成功
     wx.showToast({
       title: \'成功\',
       icon: \'success\',
       duration: 2000
     })
   //加载中
     wx.showToast({
       title: \'加载中\',
       icon: \'loading\',
       duration: 10000
     })
     setTimeout(function () {
       wx.hideToast()
     }, 2000)

    wx.showModal({
       title: \'提示\',
       content: \'这是一个模态弹窗\',
       success: function (res) {
         if (res.confirm) {
          console.log(\'用户点击确定\')
        }
       }
     })
    wx.showActionSheet({
      itemList: [\'A\', \'B\', \'C\'],
      success: function (res) {
        if (!res.cancel) {
          console.log(res.tapIndex)
        }
      }
    })
  },