Bootstrap 4 确认密码验证不起作用

Question

我使用 bootstrap 4 形式。任何人都知道如何正确添加密码与验证不匹配。谢谢  // Check if passwords match    $('#pwdId, #confirmPassword').on('keyup', function () {        if ($('#newPassword').val() != '' && $('#confirmPassword').val() != '' && $('#confirmPassword').val() == $('#confirmPassword').val()) {               }    });// 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);    })();

Answer 1

您需要将一行代码添加到打开的表单标记中。

<form class="form-signin needs-validation" novalidate oninput='confirmPassword.setCustomValidity(confirmPassword.value != newPassword.value ? true : false)'>

我做了一个codepen。请检查一下。

https://codepen.io/subhojitghosh/pen/JjROMLO

参考：https://stackoverflow.com/a/53065577/10850734

Answer 2

我简化了您的验证逻辑并使用了disabledHTMLhidden的属性。您可以在codesandbox中看到重构后的代码

JS代码：

// To ensure the following JS code is executed when the DOM is ready to be manipulated by JS

$(document).ready(function () {

  $("#newPassword, #confirmPassword").on("keyup", function () {

    // store the `newPassword` and `confirmPassword` in two variables

    var newPasswordValue = $("#newPassword").val();

    var confirmPasswordValue = $("#confirmPassword").val();

    if (newPasswordValue.length > 0 && confirmPasswordValue.length > 0) {

      if (confirmPasswordValue !== newPasswordValue) {

        $("#password-does-not-match-text").removeAttr("hidden");

        $("#submitBtn").attr("disabled", true);

      }

      if (confirmPasswordValue === newPasswordValue) {

        $("#submitBtn").removeAttr("disabled");

        $("#password-does-not-match-text").attr("hidden", true);

      }

    }

  });

});

并将您的 HTML 稍微更改为：

<link

  rel="stylesheet"

  href="https://cdn.jsdelivr.net/npm/bootstrap@4.5.3/dist/css/bootstrap.min.css"

  integrity="sha384-TX8t27EcRE3e/ihU7zmQxVncDAy5uIKz4rEkgIXeMed4M0jlfIDPvg6uqKI2xXr2"

  crossorigin="anonymous"

/>

<script

  src="https://code.jquery.com/jquery-3.5.1.slim.min.js"

  integrity="sha384-DfXdz2htPH0lsSSs5nCTpuj/zy4C+OGpamoFVy38MVBnE+IbbVYUew+OrCXaRkfj"

  crossorigin="anonymous"

></script>

<script

  src="https://cdn.jsdelivr.net/npm/popper.js@1.16.1/dist/umd/popper.min.js"

  integrity="sha384-9/reFTGAW83EW2RDu2S0VKaIzap3H66lZH81PoYlFhbGU+6BZp6G7niu735Sk7lN"

  crossorigin="anonymous"

></script>

<script

  src="https://cdn.jsdelivr.net/npm/bootstrap@4.5.3/dist/js/bootstrap.min.js"

  integrity="sha384-w1Q4orYjBQndcko6MimVbzY0tgp4pWB4lZ7lr30WKz0vr/aWKhXdBNmNb5D92v7s"

  crossorigin="anonymous"

></script>

<script src="./index.js"></script>

<form class="form-signin needs-validation" novalidate>

  <div class="card shadow-sm">

    <div class="card-body">

      <div class="form-group">

        <label class="sr-only" for="oldPassword">Current Password</label>

        <input

          class="form-control form-control-sm"

          id="oldPassword"

          name="password"

          placeholder="Current Password"

          required

          type="password"

          autocomplete="off"

          aria-describedby="inputGroupPrepend"

        />

        <div class="invalid-feedback">Please enter current password.</div>

      </div>

      <div class="form-group">

        <div class="form-group">

          <label class="sr-only" for="newPassword">New Password</label>

          <div class="input-group">

            <input

              type="password"

              autocomplete="off"

              class="form-control form-control-sm"

              id="newPassword"

              placeholder="New Password"

              aria-describedby="inputGroupPrepend"

              required

            />

            <div class="invalid-feedback">Please enter new password.</div>

          </div>

        </div>

      </div>

      <div class="form-group">

        <label class="sr-only" for="confirmPassword">Confirm Password</label>

        <div class="input-group">

          <input

            type="password"

            autocomplete="off"

            class="form-control form-control-sm"

            id="confirmPassword"

            placeholder="Confirm Password"

            aria-describedby="inputGroupPrepend"

            required

          />

          <div class="invalid-feedback">Password not a match.</div>

        </div>

      </div>

      <p id="password-does-not-match-text" class="text-danger" hidden>

        Your new password does not match

      </p>

      <button

        id="submitBtn"

        class="btn btn-md btn-primary btn-block"

        type="submit"

        disabled

      >

        Update

      </button>

    </div>

  </div>

</form>