0660543767

0660543767

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.


CS50

This is CS50x, Harvard University introduction to the intellectual enterprises of computer science and the art of programming for majors and non-majors alike, with or without prior programming experience.
An entry-level course taught by David J. Malan, CS50x teaches students how to think algorithmically and solve problems efficiently. Topics include abstraction, algorithms, data structures, encapsulation, resource management, security, software engineering, and web development. Languages include C, PHP, and JavaScript plus SQL, CSS, and HTML. Problem sets inspired by real-world domains of biology, cryptography, finance, forensics, and gaming.
As of Fall 2015, the on-campus version of CS50x, CS50, was Harvard largest course. 0660543767


Breadcrumb

Indicate the current page’s location within a navigational hierarchy that automatically adds separators via CSS.


0660543767

Progress

Documentation and examples for using Bootstrap custom progress bars featuring support for stacked bars, animated backgrounds, and text labels.


Borders

Use border utilities to quickly style the border and border-radius of an element. Great for images, buttons, or any other element. 0660543767


Image replacement

Swap text for background images with the image replacement class.


0660543767

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HTML Versus XHTML XHTML is a stricter, more XML-based version of HTML.
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XHTML stands for EXtensible HyperText Markup Language
XHTML is a stricter, more XML-based version of HTML
XHTML is HTML defined as an XML application
XHTML is supported by all major browsers
Why XHTML?
XML is a markup language where all documents must be marked up correctly (be "well-formed").
XHTML was developed to make HTML more extensible and flexible to work with other data formats (such as XML). In addition, browsers ignore errors in HTML pages, and try to display the website even if it has some errors in the markup. So XHTML comes with a much stricter error handling

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What is Multimedia? Multimedia comes in many different formats. It can be almost anything you can hear or see, like images, music, sound, videos, records, films, animations, and more.
Web pages often contain multimedia elements of different types and formats.
Browser Support
The first web browsers had support for text only, limited to a single font in a single color.
Later came browsers with support for colors, fonts, images, and multimedia!
Multimedia Formats
Multimedia elements (like audio or video) are stored in media files.
The most common way to discover the type of a file, is to look at the file extension.
Multimedia files have formats and different extensions like: .wav, .mp3, .mp4, .mpg, .wmv, and .avi.
Common Video Formats
Videoformats There are many video formats out there.
The MP4, WebM, and Ogg formats are supported by HTML.
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Alerts Provide contextual feedback messages for typical user actions with the handful of available and flexible alert messages.

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Encoding (Character Sets) To display an HTML page correctly, a web browser must know which character set to use.
What is Character Encoding?
ASCII was the first character encoding standard (also called character set). ASCII defined 128 different alphanumeric characters that could be used on the internet: numbers (0-9), English letters (A-Z), and some special characters like ! $ + - ( ) @ .
ISO-8859-1 was the default character set for HTML 4. This character set supported 256 different character codes.
ANSI (Windows-1252) was the original Windows character set. ANSI is identical to ISO-8859-1, except that ANSI has 32 extra characters.
Because ANSI and ISO-8859-1 were so limited, HTML 4 also supported UTF-8.
UTF-8 (Unicode) covers almost all of the characters and symbols in the world.
The default character set for HTML5 is UTF-8.
The HTML charset Attribute
To display an HTML page correctly, a web browser must know the character set used in the page.

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Screen readers Use screen reader utilities to hide elements on all devices except screen readers.

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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
The id attribute is used by CSS or JavaScript to perform certain tasks for the element with the specific id value.
In CSS, to select an element with a specific id, write a hash (#) character, followed by the id of the element: