BS4 Input Groups
Bootstrap 4 Input Groups
An symbol, text, or button can be added in front of or behind an input field as a “help text” using the .input-group class as a container to improve an input.
To add the help text in front of the input, use .input-group-prepend; to add it behind the input, use .input-group-append.
To style the provided help text, add the .input-group-text class last.
@
@example.com
Example
<form>
<div class="input-group mb-3">
<div class="input-group-prepend">
<span class="input-group-text">@</span>
</div>
<input type="text" class="form-control" placeholder="Username">
</div>
<div class="input-group mb-3">
<input type="text" class="form-control" placeholder="Your Email">
<div class="input-group-append">
<span class="input-group-text">@example.com</span>
</div>
</div>
</form>
Input Group Sizing
For small input groups, use the .input-group-sm class; for big input groups, use the .input-group-lg class:
Small
Default
Large
Example
<form>
<div class="input-group mb-3 input-group-sm">
<div class="input-group-prepend">
<span class="input-group-text">Small</span>
</div>
<input type="text" class="form-control">
</div>
</form>
<form>
<div class="input-group mb-3">
<div class="input-group-prepend">
<span class="input-group-text">Default</span>
</div>
<input type="text" class="form-control">
</div>
</form>
<form>
<div class="input-group mb-3 input-group-lg">
<div class="input-group-prepend">
<span class="input-group-text">Large</span>
</div>
<input type="text" class="form-control">
</div>
</form>
Multiple Inputs and Helpers
Add more than one input or add-on:
Person
OneTwoThree
Example
<!-- Multiple inputs -->
<form>
<div class="input-group mb-3">
<div class="input-group-prepend">
<span class="input-group-text">Person</span>
</div>
<input type="text" class="form-control" placeholder="First Name">
<input type="text" class="form-control" placeholder="Last Name">
</div>
</form>
<!-- Multiple addons / help text -->
<form>
<div class="input-group mb-3">
<div class="input-group-prepend">
<span class="input-group-text">One</span>
<span class="input-group-text">Two</span>
<span class="input-group-text">Three</span>
</div>
<input type="text" class="form-control">
</div>
</form>
Input Group with Checkboxes and Radios
In place of text, you may also utilize radio buttons or checkboxes:
Example
<div class="input-group mb-3">
<div class="input-group-prepend">
<div class="input-group-text">
<input type="checkbox">
</div>
</div>
<input type="text" class="form-control" placeholder="Some text">
</div>
<div class="input-group mb-3">
<div class="input-group-prepend">
<div class="input-group-text">
<input type="radio">
</div>
</div>
<input type="text" class="form-control" placeholder="Some text">
</div>
Input Group Buttons
Some text
Example
<div class="input-group mb-3">
<div class="input-group-prepend">
<button class="btn btn-outline-primary" type="button">Basic Button</button>
</div>
<input type="text" class="form-control" placeholder="Some text">
</div>
<div class="input-group mb-3">
<input type="text" class="form-control" placeholder="Search">
<div class="input-group-append">
<button class="btn btn-success" type="submit">Go</button>
</div>
</div>
<div class="input-group mb-3">
<input type="text" class="form-control" placeholder="Something clever..">
<div class="input-group-append">
<button class="btn btn-primary" type="button">OK</button>
<button class="btn btn-danger" type="button">Cancel</button>
</div>
</div>
Input Group with Dropdown Button
In the input group, provide a dropdown button. As opposed to typically, you do not require the.dropdown wrapper.
==== Dropdown Button ====
Example
<div class="input-group mt-3 mb-3">
<div class="input-group-prepend">
<button type="button" class="btn btn-outline-secondary dropdown-toggle" data-toggle="dropdown">
Dropdown button
</button>
<div class="dropdown-menu">
<a class="dropdown-item" href="#">Link 1</a>
<a class="dropdown-item" href="#">Link 2</a>
<a class="dropdown-item" href="#">Link 3</a>
</div>
</div>
<input type="text" class="form-control" placeholder="Username">
</div>
Input Group Labels
Place labels outside of the input group and keep in mind that the input’s id and the value of the for attribute must match.
The input will become more focused when you click on the label:
Enter your email address here:
@example.com
Example
<label for="demo">Write your email here:</label>
<div class="input-group mb-3">
<input type="text" class="form-control" placeholder="Email" id="demo" name="email">
<div class="input-group-append">
<span class="input-group-text">@example.com</span>
</div>
</div>
