How to add search to a Bootstrap dropdown
Use the Bootstrap Select plug-in to quickly implement the drop-down menu with search function. You need to introduce CSS and JS files of Bootstrap, jQuery and Bootstrap Select, create a select element with data-live-search="true" attribute and initialize the plug-in; 2. Custom implementations implement the search function by adding a search input box in the Bootstrap drop-down menu and using JavaScript to listen to the dynamic filtering options of input events. It is recommended to use Bootstrap Select to obtain richer functional support, and the custom solution is more suitable for lightweight and high-customized demand scenarios. Both methods are compatible with Bootstrap 5 and need to ensure that the script is executed after the DOM is loaded.
Adding a search feature to a Bootstrap dropdown improves usability when the dropdown contains many options. While Bootstrap doesn't include this functionality by default, you can achieve it easily using a third-party plugin like Bootstrap Select or with a bit of custom JavaScript and CSS. Below are two practical approaches.
1. Using Bootstrap Select (Recommended)
Bootstrap Select is a popular jQuery plugin that enhances Bootstrap dropdowns with search, filtering, and more.
Step-by-step:
-
Include the required files
Add Bootstrap, jQuery, and Bootstrap Select assets in your HTML:
<!-- Bootstrap CSS --> <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.0/dist/css/bootstrap.min.css" rel="stylesheet"> <!-- Bootstrap Select CSS --> <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/bootstrap-select@1.14.0-beta3/dist/css/bootstrap-select.min.css"> <!-- jQuery (required) --> <script src="https://code.jquery.com/jquery-3.6.0.min.js"></script> <!-- Bootstrap JS --> <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.0/dist/js/bootstrap.bundle.min.js"></script> <!-- Bootstrap Select JS --> <script src="https://cdn.jsdelivr.net/npm/bootstrap-select@1.14.0-beta3/dist/js/bootstrap-select.min.js"></script>
Create the dropdown with
data-live-search="true"<select class="selectpicker w-100" data-live-search="true"> <option value="1">Apple</option> <option value="2">Banana</option> <option value="3">Cherry</option> <option value="4">Mango</option> <option value="5">Orange</option> </select>
Initialize the plugin (optional, usually auto-initialized)
If needed, initialize manually:
$('.selectpicker').selectpicker();
That's it. You now have a searchable dropdown with a clean interface.
2. Custom Implementation (No Plugin)
If you prefer not to use a plugin, you can build a searchable dropdown using Bootstrap's dropdown component and a little JavaScript.
HTML Structure:
<div class="dropdown w-100">
<button class="btn btn-secondary dropdown-toggle" type="button" id="dropdownMenuButton" data-bs-toggle="dropdown" aria-expanded="false">
Select an option
</button>
<ul class="dropdown-menu w-100" aria-labelledby="dropdownMenuButton">
<li>
<input class="form-control form-control-sm mx-2 my-1" type="text" id="searchDropdown" placeholder="Search...">
</li>
<li><a class="dropdown-item" href="#">Apple</a></li>
<li><a class="dropdown-item" href="#">Banana</a></li>
<li><a class="dropdown-item" href="#">Cherry</a></li>
<li><a class="dropdown-item" href="#">Mango</a></li>
<li><a class="dropdown-item" href="#">Orange</a></li>
</ul>
</div>JavaScript for Search Functionality:
document.getElementById('searchDropdown').addEventListener('keyup', function () {
const filter = this.value.toLowerCase();
const dropdownItems = document.querySelectorAll('.dropdown-item');
dropdownItems.forEach(item => {
const text = item.textContent.toLowerCase();
item.style.display = text.includes(filter) ? '' : 'none';
});
});Notes:
- The search input is placed inside the dropdown menu.
- On each keystroke, it filters the items by hiding non-matching ones.
- You can improve UX by showing a "No results" message when all are hidden.
Which Approach to Choose?
- Bootstrap Select : Best for quick implementation, supports advanced features (multiple selection, live search, AJAX, etc.).
- Custom solution : Better for lightweight needs and full control over styling and behavior.
Both work well with Bootstrap 5. Just make sure your JavaScript runs after the DOM is loaded.
Basically, it's not built-in, but adding search is straightforward with the right tools or a few lines of code.
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