表单验证检查后不显示模态框

Question

我有一个注册表单，在这个表单中，我对一些输入字段进行了验证required。验证检查后，我想打开一个模态框，$('#exampleModal').modal('show');但它不起作用代码：<form class="well form-horizontal"   id="contact_form" autocomplete="off"><fieldset><legend><center><h2><b>Registration Form</b></h2></center></legend><br><div class="form-group">  <label class="col-md-4 pd-r control-label">firstname</label>    <div class="col-md-4 pd-r inputGroupContainer">  <div class="input-group">   <input  name="first_name" id="first_name"  class="form-control tboxs"  type="text" minlength="4" required>  </div>  </div></div><div class="form-group">  <label class="col-md-4 pd-r control-label">village</label>     <div class="col-md-4 pd-r inputGroupContainer">    <div class="input-group">     <input name="village" id="village" class="form-control tboxs" type="text" required>    </div>  </div></div><div class="form-group">  <label class="col-md-4 pd-r control-label"></label>  <div class="col-md-4 pd-r"><br>    <button type="submit" value="submit" class="btn-theme-colored btn">SUBMIT <span class="glyphicon glyphicon-send"></span></button>  </div></div></fieldset></form><!-- Modal --><div class="modal fade" id="exampleModal" tabindex="-1" role="dialog" aria-labelledby="exampleModalLabel" aria-hidden="true">  <div class="modal-dialog" role="document">    <div class="modal-content">      <div class="modal-header">        <h5 class="modal-title" id="exampleModalLabel"><font color="black"><strong>Verify OTP</strong></h5>      </div>      <div class="modal-body">                </div>            </div>          </form>      </div>    </div>  </div></div>在代码中，验证检查模式框未打开后验证正在工作。我不知道我的代码哪里错了。

Answer 1

这是你更新script和html代码

HTML代码问题：

按钮类型是，submit但你正在调用click它的事件

您没有分配id给特定按钮eg: id='submit'

$('#submit').click(function(){

   if($('#first_name').val() == '' ){

      alert('Name can not be left blank and atleast 4 char long');

      return false;

   }

   if($('#village').val( ) == '') {

      alert('village can not be left blank');

      return false;

   }

   $('#exampleModal').modal('show');

   return true;

   

});

<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.4.1/css/bootstrap.min.css" integrity="sha384-Vkoo8x4CGsO3+Hhxv8T/Q5PaXtkKtu6ug5TOeNV6gBiFeWPGFN9MuhOf23Q9Ifjh" crossorigin="anonymous">

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>

<script src="https://code.jquery.com/jquery-3.4.1.slim.min.js" integrity="sha384-J6qa4849blE2+poT4WnyKhv5vZF5SrPo0iEjwBvKU7imGFAV0wwj1yYfoRSJoZ+n" crossorigin="anonymous"></script>

<script src="https://cdn.jsdelivr.net/npm/popper.js@1.16.0/dist/umd/popper.min.js" integrity="sha384-Q6E9RHvbIyZFJoft+2mJbHaEWldlvI9IOYy5n3zV9zzTtmI3UksdQRVvoxMfooAo" crossorigin="anonymous"></script>

<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.4.1/js/bootstrap.min.js" integrity="sha384-wfSDF2E50Y2D1uUdj0O3uMBJnjuUD4Ih7YwaYd1iqfktj0Uod8GCExl3Og8ifwB6" crossorigin="anonymous"></script>

    <form class="well form-horizontal" id="contact_form" autocomplete="off">

    <fieldset>

    <legend><center><h2><b>Registration Form</b></h2></center></legend><br>

    <div class="form-group">

      <label class="col-md-4 pd-r control-label">firstname</label>  

      <div class="col-md-4 pd-r inputGroupContainer">

      <div class="input-group">

       <input  name="first_name" id="first_name"  class="form-control tboxs"  type="text" minlength="4">

      </div>

      </div>

    </div>

    <div class="form-group">

      <label class="col-md-4 pd-r control-label">village</label> 

        <div class="col-md-4 pd-r inputGroupContainer">

        <div class="input-group">

         <input name="village" id="village" class="form-control tboxs" type="text">

        </div>

      </div>

    </div>

    <div class="form-group">

      <label class="col-md-4 pd-r control-label"></label>

      <div class="col-md-4 pd-r"><br>

        <button type="button"  id="submit" value="submit" class="btn-theme-colored btn">SUBMIT <span class="glyphicon glyphicon-send"></span></button>

      </div>

    </div>

    </fieldset>

    </form>

    <!-- Modal -->

    <div class="modal fade" id="exampleModal" tabindex="-1" role="dialog" aria-labelledby="exampleModalLabel" aria-hidden="true">

      <div class="modal-dialog" role="document">

        <div class="modal-content">

          <div class="modal-header">

            <h5 class="modal-title" id="exampleModalLabel"><font color="black"><strong>Verify OTP</strong></h5>

          </div>

          <div class="modal-body">

             <form method="POST"  id="otp_form" action="">

                <div class="row">

                    <div class="col-sm-12 form-group">

                        <input type="text" class="form-control tboxs" id="otp_data" name="otp_data" placeholder="Enter OTP" maxlength="4" required="">

                    </div>

                </div>

                 <div class="row">

                    <div class="col-sm-12 form-group">

                        <button type="submit" name="verifyotp" class="btn btn-lg btn-info btn-block">Verify</button>

                    </div>

                </div>

              </form>

          </div>

        </div>

      </div>

    </div>