サインアップとログインプロンプトをカスタマイズする

<div class="ulp-field">
  <label for="first-name">First Name</label>
  <input type="text" name="ulp-first-name" id="first-name">
  <div class="ulp-error-info">
    First Name is Required
  </div>
</div>

<div class="ulp-field">
  <label for="preferred-language">Preferred Language</label>
  <select name="ulp-preferred-language" id="preferred-language">
    <option></option>
    <option value="english">English</option>
    <option value="french">French</option>
    <option value="spanish">Spanish</option>
  </select>
  <div class="ulp-error-info">
    Please Select a Language.
  </div>
</div>

<div class="ulp-field">
  <label for="comments">Comments</label>
  <textarea type="text" name="ulp-comments" id="comments"></textarea>
  <div class="ulp-error-info">
    Please provide an answer.
  </div>
</div>

<div class="ulp-field">
  <input type="checkbox" name="ulp-terms-of-service" id="terms-of-service">
  <label for="terms-of-service">
    I agree to the <a href="#">Terms of Service</a>
  </label>
  <div class="ulp-error-info">
    Please agree to the Terms of Service.
  </div>
</div>

// Validation Function
<script>
  function validatePhoneFunction(element, formSubmitted) {
    if (!formSubmitted) {
      return true;
    }
    return element.value.replace(/\D/g, '').length === 10;
  }
</script>

// Custom Input Field including the validation error HTML
<div class="ulp-field">
  <label for="ulp-field-phone">Phone Number</label>
  <input type="text" name="ulp-field-phone" id="ulp-field-phone">
  <div
    class="ulp-error-info"
    data-ulp-validation-function="validatePhoneFunction"
    data-ulp-validation-event-listeners="blur,change,input,focus">
    Invalid phone number
  </div>
</div>

<script>
  function requiredTextFunction(element, formSubmitted) {
    if (!formSubmitted) return true;
    return element.value.trim().length > 0;
  }
</script>

<div class="ulp-field">
  <label for="ulp-phone">Phone Number</label>
  <input
    type="text"
    id="ulp-phone"
    name="ulp-field-phone"
    aria-describedby="error-phone-required"
    aria-invalid="true"
    required
  >
  <div
    id="error-phone-required"
    class="ulp-error-info"
    role="alert"
    data-ulp-validation-function="requiredTextFunction"
    data-ulp-validation-event-listeners="change"
  >
    Phone number is required
  </div>
</div>