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JavaScript

JavaScript makes HTML pages more dynamic and interactive.


HTML Audio

The controls attribute adds audio controls, like play, pause, and volume.
The source element allows you to specify alternative audio files which the browser may choose from. The browser will use the first recognized format.
The text between the audio tags will only be displayed in browsers that do not support the audio element. 0970105033


Tooltips

Documentation and examples for adding custom Bootstrap tooltips with CSS and JavaScript using CSS3 for animations and data-attributes for local title storage.


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Float

Toggle floats on any element, across any breakpoint, using our responsive float utilities.


Approach

Learn about the guiding principles, strategies, and techniques used to build and maintain Bootstrap so you can more easily customize and extend it yourself. 0970105033


JSX

Consider this variable declaration:
This funny tag syntax is neither a string nor HTML.
It is called JSX, and it is a syntax extension to JavaScript. We recommend using it with React to describe what the UI should look like. JSX may remind you of a template language, but it comes with the full power of JavaScript.
JSX produces React โ€œelementsโ€. We will explore rendering them to the DOM in the next section. Below, you can find the basics of JSX necessary to get you started.


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Using Emojis Emojis are characters from the UTF-8 character set: ๐Ÿ˜„ ๐Ÿ˜ ๐Ÿ’—
What are Emojis?
Emojis look like images, or icons, but they are not.
They are letters (characters) from the UTF-8 (Unicode) alphabet.
UTF-8 covers almost all of the characters and symbols in the world.
The HTML charset Attribute
To display an HTML page correctly, a web browser must know the character set used in the page.
This is specified in the meta tag:

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Popovers Documentation and examples for adding Bootstrap popovers, like those found in iOS, to any element on your site.

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Form Elements This chapter describes all the different HTML form elements.
The input Element
One of the most used form element is the input element.
The input element can be displayed in several ways, depending on the type attribute.

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Text/Typography Bootstrap 4 uses a default font-size of 16px, and its line-height is 1.5.
The default font-family is "Helvetica Neue", Helvetica, Arial, sans-serif.
In addition, all p elements have margin-top: 0 and margin-bottom: 1rem (16px by default).