# 表單驗證 bootstrapValidator 參考文檔: [http://www.formvalidator.net/#default-validators_custom](http://www.formvalidator.net/#default-validators_custom)  ``` <form action="" method="post" class="form-horizontal" id="registration-form"> <div class="form-group"> <label class="col-sm-2 control-label">郵箱</label> <div class="col-sm-10"> <input data-validation="email" data-validation-error-msg="請輸入郵箱"> </div> </div> <div class="form-group"> <label class="col-sm-2 control-label">帳號</label> <div class="col-sm-10"> <input data-validation="custom" data-validation-regexp="^[a-z]{3,}$" data-validation-error-msg="用戶名由3位以上字母構成"> </div> </div> <div class="form-group"> <div class="col-sm-10 col-sm-offset-2"> <button class="btn btn-primary">保存</button> </div> </div> </form> <script> require(['hdjs'], function (hdjs) { hdjs.validate(); }); </script> ```