Я хочу знать, как сделать так, чтобы пользовательская проверка начальной загрузки также показывала конкретное поле, где форма не заполнена.
Вы можете наблюдать, как обычная форма показывает или переходит к конкретному полю, которое не заполнено, когдаформа отправляется
, где при начальной загрузке пользовательская проверка не делает этого.
Это код без пользовательской проверки начальной загрузки
<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>
Это проверка начальной загрузки
// 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>