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Valeri Tandilashvili's Personal Professional Blog
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Attributes of <video>
Another aspect shared by both the audio and the video elements is that each has controls, autoplay and loop attributes
<video controls autoplay loop>
   <source src="http://www.sololearn.com/uploads/video.mp4" type="video/mp4">
   <source src="http://www.sololearn.com/uploads/video.ogg" type="video/ogg">
   Video is not supported by your browser
</video>
In this example, the video will replay after it finishes playing Note: 
Currently, there are three supported video formats for the <video> element: MP4, WebM, and OGG
<video> tag
We can specify the video source URL using an attribute in a video element, or using source elements inside the video element
<video controls>
   <source src="http://www.sololearn.com/uploads/video.mp4" type="video/mp4">
   <source src="http://www.sololearn.com/uploads/video.ogg" type="video/ogg">
   Video is not supported by your browser
</video>
Note: 
Another aspect that the audio and video elements have in common is that the major browsers do not all support the same file types. If the browser does not support the first video type, it will try the next one.
attributes of <audio> 
controls
Specifies that audio controls should be displayed (such as a play/pause button, etc.)
<audio controls>
    <source src="http://www.sololearn.com/uploads/audio.mp3" type="audio/mpeg">
    Audio element not supported by your browser. 
</audio>
autoplay
When this attribute is defined, audio starts playing as soon as it is ready, without asking for the visitor's permission
<audio controls autoplay>
    <source src="http://www.sololearn.com/uploads/audio.mp3" type="audio/mpeg">
    Audio element not supported by your browser. 
</audio>
loop
This attribute is used to have the audio replay every time it is finished
<audio controls autoplay loop>
    <source src="http://www.sololearn.com/uploads/audio.mp3" type="audio/mpeg">
    Audio element not supported by your browser. 
</audio>
audio on the Web
There are two different ways to specify the audio source file's URL. The first uses the source attribute:
<audio src="http://www.sololearn.com/uploads/audio.mp3" controls>
    Audio element not supported by your browser
</audio>
Another way of specifying audio URL
<audio controls>
    <source src="http://www.sololearn.com/uploads/audio.mp3" type="audio/mpeg">
    <source src="http://www.sololearn.com/uploads/audio.ogg" type="audio/ogg">
</audio>
The <aside> Element example 
<aside>
is secondary or tangential content which could be considered separate from but indirectly related to the main content. This type of content is often represented in sidebars. When an 
<aside>
tag is used within an 
<article>
tag, the content of the 
<aside>
should be specifically related to that article
<article>
    <h1> Gifts for everyone</h1>
    <p>This website will be the best place for choosing gifts</p>
    <aside>
        <p>Gifts will be delivered to you within 24 hours</p>
    </aside>
</article>
The <section> Element example 
<section>
is a logical container of the page or article. Sections can be used to divide up content within an article. For example, a homepage could have a section for introducing the company, another for news items, and still another for contact information
<article>
    <h1>Welcome</h1>
    <section>
        <h1>Heading</h1>
        <p>content or image</p>
    </section>
</article>
<footer> element content
The following information is usually provided between these tags:
- Contact Information
- Privacy Policy
- Social Media Icons
- Terms of Service
- Copyright Information
- Sitemap and Related Documents
The List of HTML5 Content Models
In HTML, elements typically belonged in either the block level or inline content model. HTML5 introduces seven main content models
- Metadata
- Embedded
- Interactive
- Heading
- Phrasing
- Flow
- Sectioning
Note: 
The HTML5 content models are designed to make the markup structure more meaningful for both the browser and the web designer
HTML5 Integrated API 
- Drag and Drop
- Audio and Video
- Offline Web Applications
- History
- Local Storage
- Geolocation
- Web Messaging
HTML5 Forms
- The Web Forms 2.0 specification allows for creation of more powerful forms and more compelling user experiences. - 
Date pickers
, 
color pickers
, and 
numeric stepper controls
have been added. - Input field types now include 
email
, 
search
, and 
URL
. - 
PUT
and 
DELETE
form methods are now supported
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