<view class="form">     <view class="form-input">         <view class="label">昵称</view>         <input class="input" value="{{nickname}}" placeholder="请输入昵称" type="text"></input>     </view>     <view>         <button bindtap="doSubmit" class="btn-submit">确 定</button>     </view> </view> var a = getApp(); Page({     data: {       nickname:'',     },     doSubmit: function doSubmit() {         const e = this.data.nickname;           wx.showModal({            title:e         });           } }); [图片]