Popover
Bootstrap’s Popover component extends the Tooltip plugin to provide a responsive, interactive, and rich content overlay. Popovers are used to display more complex information like HTML content, forms, or additional interactive elements, triggered by clicking or hovering over an element.
Implementing a Basic Popover
HTML Code for a Button with Popover:
<button type=”button” class=”btn btn-secondary” data-toggle=”popover” title=”Popover Title” data-content=”Some content inside the popover”>
Click me for Popover
</button>
<script>
$(document).ready(function(){
$(‘[data-toggle=”popover”]’).popover(); // Initialize popovers
});
</script>
Explanation:
– The `data-toggle=”popover”` attribute is used to bind the popover to the button.
– `title` and `data-content` attributes hold the content that will be displayed in the popover.
– Popovers are initialized using jQuery: `$(‘[data-toggle=”popover”]’).popover()`.
Customizing Popovers
Example: Popover with HTML Content
<button type=”button” class=”btn btn-info” data-toggle=”popover” data-html=”true” title=”<strong>Bold Popover Title</strong>” data-content=”<em>Some emphasized content</em>”>
Popover with HTML Content
</button>
<script>
$(document).ready(function(){
$(‘[data-toggle=”popover”]’).popover();
});
</script>
Explanation:
– The `data-html=”true”` attribute allows HTML content inside the `title` and `data-content` attributes.
– This provides flexibility to include styled text, images, or other HTML elements in the popover.
Advanced Popover Options
Trigger Options
HTML Code for a Focus-Triggered Popover:
<a tabindex=”0″ class=”btn btn-lg btn-danger” role=”button” data-toggle=”popover” data-trigger=”focus” title=”Dismissible Popover” data-content=”Click anywhere to close this popover”>
Click or Focus on Me
</a>
<script>
$(document).ready(function(){
$(‘[data-toggle=”popover”]’).popover();
});
</script>
Explanation:
– The `data-trigger=”focus”` attribute triggers the popover when the element comes into focus and closes it when focus is lost.
– This is useful for elements like input fields or links where the popover should remain open during interaction.
Placement Variations
HTML Code for a Right-Placed Popover:
<button type=”button” class=”btn btn-warning” data-toggle=”popover” data-placement=”right” title=”Right Popover” data-content=”I’m placed to the right!”>
Popover on the Right
</button>
<script>
$(document).ready(function(){
$(‘[data-toggle=”popover”]’).popover();
});
</script>
Explanation:
– The `data-placement=”right”` attribute positions the popover to the right of the element.
– Bootstrap also supports other placements like `left`, `top`, `bottom`.
Explanation
– This navbar is created using the `.navbar` class, which is a responsive container for navigation items.
– The `.navbar-brand` class styles the brand name or logo.
– The `.navbar-toggler` is used for collapsing the navbar on smaller screens (responsive behavior). It targets the element with `id=”navbarNavDropdown”` for toggling.
– Inside the navbar, `.navbar-nav` organizes the navigation items.
– The `.nav-item` and `.nav-link` classes style individual navigation links.
– A dropdown menu is implemented with `.dropdown`, `.dropdown-toggle`, and `.dropdown-menu`. The dropdown toggle is linked to the dropdown menu using `data-toggle=”dropdown”`.
– The inclusion of jQuery, Popper.js, and Bootstrap’s JavaScript at the end of the body is necessary for enabling the responsive toggle and dropdown functionalities.
This example showcases a practical implementation of a responsive navbar that incorporates various Bootstrap nav classes, offering a mix of regular links and dropdown menus. Such a navbar is common in many web applications and websites, providing a clean and intuitive navigation experience.
