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Bootstrap Input Group Tutorial with Examples

View more Tutorials:

  1. Input Group
  2. Input Group with Checkbox, Radio
  3. Input Group with Buttons
  4. Input Group with Dropdown
  5. Input Group with Select
  6. Input Group with Custom File
  7. Input Group Sizing
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1- Input Group

See also the way to use Form and Input Controls in Bootstrap:
Input Group means the way helping you to extend an Input Control by adding the elements such as Text, Button, hoặc Button Group,..next to it . The elements added next to the  Input Control are referred to as Addons.
input-group-example.html

<!DOCTYPE html>
<html>

<head>
    <meta charset="utf-8">
    <title>Input Group Example</title>
    <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.3.1/css/bootstrap.min.css">
</head>

<body>
    <div class="container">
        <h2 class="mb-4 mt-2">Input Group Examples</h2>

        <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="Recipient's username">
            <div class="input-group-append">
                <span class="input-group-text">@example.com</span>
            </div>
        </div>

        <div class="input-group mb-3">
            <div class="input-group-prepend">
                <span class="input-group-text">$</span>
            </div>
            <input type="text" class="form-control">
            <div class="input-group-append">
                <span class="input-group-text">.00</span>
            </div>
        </div>

    </div>

    <script src="https://code.jquery.com/jquery-3.3.1.slim.min.js"></script>
    <script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.7/umd/popper.min.js"></script>
    <script src="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/js/bootstrap.min.js"></script>

</body>
</html>
You can put many Input Controls or many Addons in an Input Group: 

<!-- 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>
Note: The aria-label, aria-describedby attributes may be used if you want your application to support the equipment such as  Screen Reader the best (screen reader for the blind). 
<div class="input-group mb-3">
    <div class="input-group-prepend">
        <span class="input-group-text" id="basic-addon1">@</span>
    </div>
    <input type="text" class="form-control" placeholder="Username"
                   aria-label="Username" aria-describedby="basic-addon1">
</div>

2- Input Group with Checkbox, Radio

For example, Input Group with Addon which is checkbox or radio: 

<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">
        <span class="input-group-text">Gender:</span>
        <div class="input-group-text">
            <input type="radio" name="gender" value="male">
        </div>
        <span class="input-group-text">Male</span>
        <div class="input-group-text">
            <input type="radio" name="gender" value="female">
        </div>
        <span class="input-group-text">Female</span>
    </div>
    <input type="text" class="form-control" placeholder="Some text">
</div>

3- Input Group with Buttons

Add one or more Button to Input Group: 

<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>

4- Input Group with Dropdown

Add Dropdown to an Input Group. 

<div class="input-group mb-3">
    <div class="input-group-prepend">
        <div class="btn-group">
            <button class="btn btn-primary dropdown-toggle" type="button" data-toggle="dropdown">
                Tutorials
            </button>
            <div class="dropdown-menu">
                <a class="dropdown-item" href="#">Javascript</a>
                <a class="dropdown-item" href="#">Css</a>
                <div class="dropdown-divider"></div>
                <a class="dropdown-item" href="#">Bootstrap</a>
            </div>
        </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="btn-group">

            <button type="button" class="btn btn-success">Go to Home Page</button>
            <button type="button" class="btn btn-primary dropdown-toggle dropdown-toggle-split"
                    data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
                <span class="sr-only">Toggle Dropdown</span>
            </button>

            <div class="dropdown-menu">
                <a class="dropdown-item" href="#">Javascript</a>
                <a class="dropdown-item" href="#">Css</a>
                <div class="dropdown-divider"></div>
                <a class="dropdown-item" href="#">Bootstrap</a>
            </div>

        </div>
    </div>
    <input type="text" class="form-control" placeholder="Some text">
</div>
See also:

5- Input Group with Select

When using an Input Group with the <select> element, the <select> element should be applied the "custom-select" class, which makes it fill the remaining space in the horizontal direction, and having style as the same as that of Bootstrap.
Example: Input Group with Custom Select: 

<div class="input-group mb-3">
    <div class="input-group-prepend">
        <label class="input-group-text" for="inputGroupSelect01">Options</label>
    </div>
    <select class="custom-select" id="inputGroupSelect01">
        <option selected>Choose...</option>
        <option value="1">One</option>
        <option value="2">Two</option>
        <option value="3">Three</option>
    </select>
</div>


<div class="input-group">
    <select class="custom-select">
        <option selected>Choose...</option>
        <option value="1">One</option>
        <option value="2">Two</option>
        <option value="3">Three</option>
    </select>
    <div class="input-group-append">
        <button class="btn btn-outline-success" type="button">Button</button>
    </div>
</div>

6- Input Group with Custom File

Example: use Input Group with the <input type="file"> custom element: 

<div class="input-group mb-3">
    <div class="input-group-prepend">
        <span class="input-group-text">Upload</span>
    </div>
    <div class="custom-file">
        <input type="file" class="custom-file-input" id="inputGroupFile01">
        <label class="custom-file-label" for="inputGroupFile01">Choose file</label>
    </div>
</div>

<div class="input-group mb-3">
    <div class="custom-file">
        <input type="file" class="custom-file-input" id="inputGroupFile02">
        <label class="custom-file-label" for="inputGroupFile02">Choose file</label>
    </div>
    <div class="input-group-append">
        <span class="input-group-text" id="">Upload</span>
    </div>
</div>

<div class="input-group mb-3">
    <div class="input-group-prepend">
        <button class="btn btn-outline-secondary" type="button">Button</button>
    </div>
    <div class="custom-file">
        <input type="file" class="custom-file-input" id="inputGroupFile03">
        <label class="custom-file-label" for="inputGroupFile03">Choose file</label>
    </div>
</div>

<div class="input-group">
    <div class="custom-file">
        <input type="file" class="custom-file-input" id="inputGroupFile04">
        <label class="custom-file-label" for="inputGroupFile04">Choose file</label>
    </div>
    <div class="input-group-append">
        <button class="btn btn-outline-secondary" type="button">Button</button>
    </div>
</div>

7- Input Group Sizing

By adding the classes related to the "Sizing" to the .input-group element, it will act any child elements. You don't need to set up sizing for all of them.
List of classes used for establishing the "Sizing" for Input Group:
  • input-group-sm
  • input-group-lg

<div class="input-group input-group-sm mb-3">
    <div class="input-group-prepend">
        <span class="input-group-text">Small</span>
    </div>
    <input type="text" class="form-control">
</div>

<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>

<div class="input-group input-group-lg">
    <div class="input-group-prepend">
        <span class="input-group-text">Large</span>
    </div>
    <input type="text" class="form-control">
</div>

View more Tutorials:

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