--------------------------------page.json--------------------------------

{

    "usingComponents": {

        "mp-navigation-bar": "weui-miniprogram/navigation-bar/navigation-bar",

        "mp-toptips": "weui-miniprogram/toptips/toptips"

    },

    "navigationStyle": "custom"

}

--------------------------------以下是wxml--------------------------------

<view class="page">

    <button class="weui-btn" type="primary" bindtap="tapErrShow">显示/隐藏error</button>

    <mp-toptips msg="{{errorMsg}}" type="error" show="{{errorShow}}"></mp-toptips>

</view>

--------------------------------以下是js逻辑--------------------------------

Page({

    data: {

        errorMsg: '',

        errorShow: false,

    },

    tapErrShow() {

        console.log(this.data.errorShow)

        this.setData({

          errorShow: !this.data.errorShow,

        })

        if(this.data.errorShow){

          this.setData({

            errorMsg: '这是一个错误提示'

          })

        }else{

          this.setData({

            errorMsg: ''

          })

        }

        console.log(this.data.errorMsg)

      },

})