Forcing the display of invalid-feedback in Bootstrap 4 is crucial

Question

Forcing the display of invalid-feedback in Bootstrap 4 is crucial

Suppose I am working with HTML code that looks like this:

...
<div class="form-group">
    <div class="form-check">
        <input class="form-check-input" type="checkbox" id="invalidCheck">
        <label class="form-check-label" for="invalidCheck">
            Agree to something
        </label>
    </div>

    <div class="invalid-feedback">
        I am located outside of `form-check`!
    </div>
</div>
...

I am looking to ensure that the

<div class="invalid-feedback">...

is displayed without the use of JavaScript (relying solely on Bootstrap CSS). While I am aware of classes like was-validated or is-invalid, they target elements within the form-check. Is there a straightforward and effective way to display the invalid-feedback by utilizing Bootstrap-specific CSS classes?

One approach that I came across involves:

<div class="invalid-feedback d-block">
    Now I am visible!
</div>

However, I am uncertain if this solution is optimal. I would appreciate any advice!

css twitter-bootstrap bootstrap-4

Answer 1

Answer №1

To manually display it, utilize display classes such as d-block

Implement it in this manner

<div class="valid-feedback d-block">

or

<div class="invalid-feedback d-block">

Explore further information in the documentation

Answer 2

To manually display it, utilize display classes such as d-block

Implement it in this manner

<div class="valid-feedback d-block">

or

<div class="invalid-feedback d-block">

Explore further information in the documentation

Answer 3

Answer №2

Explore alternative methods.

1) Consider utilizing a was-validated class that can be applied to the form as shown below

<form action="..." class="was-validated" method="POST" novalidate>

By setting it on the form, you enable validation feedback and color-coding of input fields.

Add this class conditionally to your form when server-side validation fails.

2) Alternatively, employ JavaScript to have control over the displayed content. You can dynamically add this class

$('form').addClass('was-validated');

Furthermore, you can check if the form is valid dynamically like so

 if ($('form').checkValidity()) {...

Answer 4

Explore alternative methods.

1) Consider utilizing a was-validated class that can be applied to the form as shown below

<form action="..." class="was-validated" method="POST" novalidate>

By setting it on the form, you enable validation feedback and color-coding of input fields.

Add this class conditionally to your form when server-side validation fails.

2) Alternatively, employ JavaScript to have control over the displayed content. You can dynamically add this class

$('form').addClass('was-validated');

Furthermore, you can check if the form is valid dynamically like so

 if ($('form').checkValidity()) {...

Answer 5

Answer №3

If you encounter a scenario where the invalid-feedback class is not displaying, even after adding was-validated to the form and it's not immediately following a required input tag, there is a workaround that can be used.

<form>
    <!-- include form inputs for validation here -->
    <!-- add something else -->
    <input type="hidden" value="hack" required> <!-- the workaround -->
    <div class="invalid-feedback">Here is some global feedback to display</div>
    <button id="submit-button" type="submit">Submit</button>
</form>

Answer 6

If you encounter a scenario where the invalid-feedback class is not displaying, even after adding was-validated to the form and it's not immediately following a required input tag, there is a workaround that can be used.

<form>
    <!-- include form inputs for validation here -->
    <!-- add something else -->
    <input type="hidden" value="hack" required> <!-- the workaround -->
    <div class="invalid-feedback">Here is some global feedback to display</div>
    <button id="submit-button" type="submit">Submit</button>
</form>

Forcing the display of invalid-feedback in Bootstrap 4 is crucial

Answer №1

Answer №2

Answer №3

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