What is Bootstrap?
Bootstrap is a free front-end framework for faster and easier web development
Bootstrap also gives you the ability to easily create responsive designs
Documentation and examples for Bootstrap’s powerful, responsive navigation header, the navbar. Includes support for branding, navigation, and more, including support for our collapse plugin. 0640381626
Documentation and examples for using Bootstrap custom progress bars featuring support for stacked bars, animated backgrounds, and text labels.
Control the visibility, without modifying the display, of elements with visibility utilities.
Migrating to v4
Bootstrap 4 is a major rewrite of the entire project. The most notable changes are summarized below, followed by more specific changes to relevant components. 0640381626
State and Lifecycle
This page introduces the concept of state and lifecycle in a React component. You can find a detailed component API reference here.
Consider the ticking clock example from one of the previous sections. In Rendering Elements, we have only learned one way to update the UI. We call ReactDOM.render() to change the rendered output:
HTML Video How it Works
The controls attribute adds video controls, like play, pause, and volume.
It is a good idea to always include width and height attributes. If height and width are not set, the page might flicker while the video loads.
The source element allows you to specify alternative video files which the browser may choose from. The browser will use the first recognized format.
The text between the video tags will only be displayed in browsers that do not support the video element.
The id Attribute The HTML id attribute is used to specify a unique id for an HTML element (the value must be unique within the HTML document).
Using The id Attribute
In CSS, to select an element with a specific id, write a hash (#) character, followed by the id of the element:
Buttons Use Bootstrap’s custom button styles for actions in forms, dialogs, and more with support for multiple sizes, states, and more.
Pagination Documentation and examples for showing pagination to indicate a series of related content exists across multiple pages.