引导自定义验证未在提交表单时显示特定字段答案

【问题标题】：bootstrap custom validation is not showing up specific field on submission of the form引导自定义验证未在提交表单时显示特定字段
【发布时间】：2018-05-23 11:18:49
【问题描述】：

我想知道如何使引导自定义验证也显示未填写表单的特定字段。

您可以观察到正常的表单显示或提交表单时转到未填写的特定字段

引导程序自定义验证不这样做。

这是没有引导自定义验证的代码

<head>
  <link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.1.0/css/bootstrap.min.css" integrity="sha384-9gVQ4dYFwwWSjIDZnLEWnxCjeSWFphJiwGPXr1jddIhOegiu1FwO5qRGvFXOdJZ4" crossorigin="anonymous">
</head>
<form>
  <div class="form-row">
    <div class="col-md-4 mb-3">
      <label for="validationDefault01">First name</label>
      <input type="text" class="form-control" id="validationDefault01" placeholder="First name" value="Mark" required>
    </div>
    <div class="col-md-4 mb-3">
      <label for="validationDefault02">Last name</label>
      <input type="text" class="form-control" id="validationDefault02" placeholder="Last name" value="Otto" required>
    </div>
    <div class="col-md-4 mb-3">
      <label for="validationDefaultUsername">Username</label>
      <div class="input-group">
        <div class="input-group-prepend">
          <span class="input-group-text" id="inputGroupPrepend2">@</span>
        </div>
        <input type="text" class="form-control" id="validationDefaultUsername" placeholder="Username" aria-describedby="inputGroupPrepend2" required>
      </div>
    </div>
  </div>
  <div class="form-row">
    <div class="col-md-6 mb-3">
      <label for="validationDefault03">City</label>
      <input type="text" class="form-control" id="validationDefault03" placeholder="City" required>
    </div>
    <div class="col-md-3 mb-3">
      <label for="validationDefault04">State</label>
      <input type="text" class="form-control" id="validationDefault04" placeholder="State" required>
    </div>
    <div class="col-md-3 mb-3">
      <label for="validationDefault05">Zip</label>
      <input type="text" class="form-control" id="validationDefault05" placeholder="Zip" required>
    </div>
  </div>
  <div class="form-group">
    <div class="form-check">
      <input class="form-check-input" type="checkbox" value="" id="invalidCheck2" required>
      <label class="form-check-label" for="invalidCheck2">
        Agree to terms and conditions
      </label>
    </div>
  </div>
  <button class="btn btn-primary" type="submit">Submit form</button>
</form>

这是引导验证

// Example starter JavaScript for disabling form submissions if there are invalid fields
(function() {
  'use strict';
  window.addEventListener('load', function() {
    // Fetch all the forms we want to apply custom Bootstrap validation styles to
    var forms = document.getElementsByClassName('needs-validation');
    // Loop over them and prevent submission
    var validation = Array.prototype.filter.call(forms, function(form) {
      form.addEventListener('submit', function(event) {
        if (form.checkValidity() === false) {
          event.preventDefault();
          event.stopPropagation();
        }
        form.classList.add('was-validated');
      }, false);
    });
  }, false);
})();

<html>

<head>
  <link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.1.0/css/bootstrap.min.css" integrity="sha384-9gVQ4dYFwwWSjIDZnLEWnxCjeSWFphJiwGPXr1jddIhOegiu1FwO5qRGvFXOdJZ4" crossorigin="anonymous">
</head>

<body>
  <form class="needs-validation" novalidate>
    <div class="form-row">
      <div class="col-md-4 mb-3">
        <label for="validationCustom01">First name</label>
        <input type="text" class="form-control" id="validationCustom01" placeholder="First name" value="Mark" required>
        <div class="valid-feedback">
          Looks good!
        </div>
      </div>
      <div class="col-md-4 mb-3">
        <label for="validationCustom02">Last name</label>
        <input type="text" class="form-control" id="validationCustom02" placeholder="Last name" value="Otto" required>
        <div class="valid-feedback">
          Looks good!
        </div>
      </div>
      <div class="col-md-4 mb-3">
        <label for="validationCustomUsername">Username</label>
        <div class="input-group">
          <div class="input-group-prepend">
            <span class="input-group-text" id="inputGroupPrepend">@</span>
          </div>
          <input type="text" class="form-control" id="validationCustomUsername" placeholder="Username" aria-describedby="inputGroupPrepend" required>
          <div class="invalid-feedback">
            Please choose a username.
          </div>
        </div>
      </div>
    </div>
    <div class="form-row">
      <div class="col-md-6 mb-3">
        <label for="validationCustom03">City</label>
        <input type="text" class="form-control" id="validationCustom03" placeholder="City" required>
        <div class="invalid-feedback">
          Please provide a valid city.
        </div>
      </div>
      <div class="col-md-3 mb-3">
        <label for="validationCustom04">State</label>
        <input type="text" class="form-control" id="validationCustom04" placeholder="State" required>
        <div class="invalid-feedback">
          Please provide a valid state.
        </div>
      </div>
      <div class="col-md-3 mb-3">
        <label for="validationCustom05">Zip</label>
        <input type="text" class="form-control" id="validationCustom05" placeholder="Zip" required>
        <div class="invalid-feedback">
          Please provide a valid zip.
        </div>
      </div>
    </div>
    <div class="form-group">
      <div class="form-check">
        <input class="form-check-input" type="checkbox" value="" id="invalidCheck" required>
        <label class="form-check-label" for="invalidCheck">
        Agree to terms and conditions
      </label>
        <div class="invalid-feedback">
          You must agree before submitting.
        </div>
      </div>
    </div>
    <button class="btn btn-primary" type="submit">Submit form</button>
  </form>
</body>

</html>

【问题讨论】：

使用 jQuery 验证 jqueryvalidation.org 更好

标签： javascript html css twitter-bootstrap validation

【解决方案1】：

如果您从<form class="needs-validation was-validated" novalidate=""> 中删除novalidate=""，您将获得与没有引导验证相同的结果。

novalidate 阻止浏览器验证表单，以便您可以应用 Bootstrap 的自定义行为。

如果你想在验证后添加滚动到 id 我想你必须自己做或者检查你正在使用的库中是否有这样的配置。

【讨论】：

我想要带有红色边框的自定义验证，并且我想要寻找未填充的特定元素。
如果我们删除 novalidate 它的行为是默认验证。我也想去自定义验证中的特定文件..@iGian
和我的帖子一样，如果没有配置设置，您需要添加自定义 javascript。检查this 是否适合您。

【解决方案2】：

我已经使用一些 JavaScript 代码更新了代码。

而且它正在工作。 :)

// Example starter JavaScript for disabling form submissions if there are invalid fields
(function() {
  'use strict';
  window.addEventListener('load', function() {
    // Fetch all the forms we want to apply custom Bootstrap validation styles to
    var forms = document.getElementsByClassName('needs-validation');
    // Loop over them and prevent submission
    var validation = Array.prototype.filter.call(forms, function(form) {
      form.addEventListener('submit', function(event) {
        if (form.checkValidity() === false) {
          event.preventDefault();
          event.stopPropagation();
          var invalidOptions = document.querySelectorAll(
            ".form-control:invalid");
          invalidOptions.forEach(function(element) {
            element.parentNode.childNodes.forEach(function(node) {
              if (node.className == 'valid-feedback') {
                node.className = 'invalid-feedback';
                node.innerText =
                  'Please choose a Gender';
              }
            });
          });
          $('html, body').animate({
            scrollTop: $(invalidOptions[0]).offset().top
          }, 2000);
        }
        form.classList.add('was-validated');
      }, false);
    });
  }, false);
})();

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<html>

<head>
  <link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.1.0/css/bootstrap.min.css" integrity="sha384-9gVQ4dYFwwWSjIDZnLEWnxCjeSWFphJiwGPXr1jddIhOegiu1FwO5qRGvFXOdJZ4" crossorigin="anonymous">
</head>

<body>
  <form class="needs-validation" novalidate>
    <div class="form-row">
      <div class="col-md-4 mb-3">
        <label for="validationCustom01">First name</label>
        <input type="text" class="form-control" id="validationCustom01" placeholder="First name" value="Mark" required>
        <div class="valid-feedback">
          Looks good!
        </div>
      </div>
      <div class="col-md-4 mb-3">
        <label for="validationCustom02">Last name</label>
        <input type="text" class="form-control" id="validationCustom02" placeholder="Last name" value="Otto" required>
        <div class="valid-feedback">
          Looks good!
        </div>
      </div>
      <div class="col-md-4 mb-3">
        <label for="validationCustomUsername">Username</label>
        <div class="input-group">
          <div class="input-group-prepend">
            <span class="input-group-text" id="inputGroupPrepend">@</span>
          </div>
          <input type="text" class="form-control" id="validationCustomUsername" placeholder="Username" aria-describedby="inputGroupPrepend" required>
          <div class="invalid-feedback">
            Please choose a username.
          </div>
        </div>
      </div>
    </div>
    <div class="form-row">
      <div class="col-md-6 mb-3">
        <label for="validationCustom03">City</label>
        <input type="text" class="form-control" id="validationCustom03" placeholder="City" required>
        <div class="invalid-feedback">
          Please provide a valid city.
        </div>
      </div>
      <div class="col-md-3 mb-3">
        <label for="validationCustom04">State</label>
        <input type="text" class="form-control" id="validationCustom04" placeholder="State" required>
        <div class="invalid-feedback">
          Please provide a valid state.
        </div>
      </div>
      <div class="col-md-3 mb-3">
        <label for="validationCustom05">Zip</label>
        <input type="text" class="form-control" id="validationCustom05" placeholder="Zip" required>
        <div class="invalid-feedback">
          Please provide a valid zip.
        </div>
      </div>
    </div>
    <div class="form-group">
      <div class="form-check">
        <input class="form-check-input" type="checkbox" value="" id="invalidCheck" required>
        <label class="form-check-label" for="invalidCheck">
        Agree to terms and conditions
      </label>
        <div class="invalid-feedback">
          You must agree before submitting.
        </div>
      </div>
    </div>
    <button class="btn btn-primary" type="submit">Submit form</button>
  </form>
</body>

</html>

【讨论】：