<form bindsubmit="formBindsubmit" bindreset="formReset"> <view style="display:flex;">  <label>用戶名：</label>  <input name="userName" placeholder="請輸入用戶名！" /> </view> <view style="display:flex;">  <label>密碼：</label>  <input name="psw" placeholder="請輸入密碼！" password="true" /> </view> <view style="display:flex;margin-top:30px;">  <button style="width:30%;" formType="submit" >登錄</button>  <button style="width:30%" formType="reset" >重置</button> </view></form><view>{{userName}}</view><view>{{psw}}</view><toast duration="2000" hidden="{{toastHidden}}" bindchange="toastBindChange">用戶名或密碼不能為空！</toast> 

Page({ data:{  // text:"這是一個頁面"  toastHidden:true,  userName:'',  psw:'' }, formBindsubmit:function(e){  if(e.detail.value.userName.length==0||e.detail.value.psw.length==0){   this.setData({    toastHidden:!this.data.toastHidden   })  }else{   this.setData({    tip:'',    userName:'用戶名：'+e.detail.value.userName,    psw:'密碼：'+e.detail.value.psw   })  } }, formReset:function(){  this.setData({   userName:'',   psw:''  }) }, toastBindChange:function(){  this.setData({    toastHidden:!this.data.toastHidden  }) }})