Bootstrap: Remove form field border
In that example, to remove the border simply write:
.form-control {
border: 0;
}
In your CSS file.
This will remove borders from all your form fields though, a more flexible approach would be to attach a class to the form fields you want to have no border, so your HTML would be something like:
<input type="email" class="form-control no-border" id="inputEmail3" placeholder="Email">
and your CSS:
.no-border {
border: 0;
box-shadow: none; /* You may want to include this as bootstrap applies these styles too */
}
In Bootstrap 4, you can add border-0
class to your element to remove its border.
Other classes that you can use - Bootstrap 4 Borders
<span class="border-0"></span> /* remove all borders */
<span class="border-top-0"></span> /* remove top border */
<span class="border-right-0"></span> /* remove border on the right */
<span class="border-bottom-0"></span> /* remove bottom border */
<span class="border-left-0"></span> /* remove border on the left */
And here is a working example for what you asked:
$("#myButton").click(function() {
$("#myInput").toggleClass('border-0')
});
<link href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css" rel="stylesheet" />
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<form>
<input id="myInput">
<input id="myButton" type="button" value="Toggle Border">
</form>