<input type="text" name="email" datatype="e" ignore="ignore" placeholder="請輸入郵箱" autocomplete="off" class="layui-input">
 datatype="e"驗證郵箱
 ignore="ignore"忽略，如果填寫就驗證沒有填入郵箱就不驗證
 詳情參考Validform_v5.3.2.js
 貼出一部分：
 var tipmsg={//默認提示文字;
  tit:"提示信息",
  w:{
   "*":"不能為空！",
   "*6-16":"請?zhí)顚?到16位任意字符！",
   "n":"請?zhí)顚憯?shù)字！",
   "n6-16":"請?zhí)顚?到16位數(shù)字！",
   "s":"不能輸入特殊字符！",
   "s6-18":"請?zhí)顚?到18位字符！",
   "p":"請?zhí)顚戉]政編碼！",
   "m":"請?zhí)顚懯謾C號碼！",
   "e":"郵箱地址格式不對！",
   "url":"請?zhí)顚懢W(wǎng)址！"
  },
  def:"請?zhí)顚懻_信息！",
  undef:"datatype未定義！",
  reck:"兩次輸入的內(nèi)容不一致！",
  r:"通過信息驗證！",
  c:"正在檢測信息…",
  s:"請{填寫|選擇}{0|信息}！",
  v:"所填信息沒有經(jīng)過驗證，請稍后…",
  p:"正在提交數(shù)據(jù)…"
 }

Validform.util={
 dataType:{
  "*":/[\w\W]+/,
  "*6-16":/^[\w\W]{6,16}$/,
  "n":/^\d+$/,
  "n6-16":/^\d{6,16}$/,
  "s":/^[\u4E00-\u9FA5\uf900-\ufa2d\w\.\s]+$/,
  "s6-18":/^[\u4E00-\u9FA5\uf900-\ufa2d\w\.\s]{6,18}$/,
  "p":/^[0-9]{6}$/,
  "m":/^13[0-9]{9}$|14[0-9]{9}|15[0-9]{9}$|18[0-9]{9}$/,
  "e":/^\w+([-+.']\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*$/,
  "url":/^(\w+:\/\/)?\w+(\.\w+)+.*$/
 },

<input type="checkbox" name="loginflag" checked lay-skin="switch" lay-filter="switchTest" lay-text="允許|禁止">

 <input type="text" name="password" datatype="s6-18" placeholder="請輸入密碼" autocomplete="off" class="layui-input">

$("#signupForm").Validform({ //根據(jù)id觸發(fā)
 btnSubmit:"#formSubmit", //綁定id根據(jù)id觸發(fā)驗證
 tiptype:3,     //第三種方式
 showAllError:true,   //顯示所有的錯誤
 beforeSubmit:function(curform){ //驗證過后執(zhí)行save方法
  save();
 },
});

layui.use(['form'], function(){
   var form = layui.form;
   //監(jiān)聽提交
   form.on('submit(submitForm)', function(data){
    save();
   });
  });