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HTML Essential Training

Embedding audio


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HTML Essential Training

with Bill Weinman

Video: Embedding audio

HTML5 provides a simple and powerful feature for embedding audio files in your web pages. Let's make a working copy of audio.html, and I'm just going to rename this to audio-working.html, open this in my text editor, and I'm also going to open it in a browser, and there is our Firefox browser. You can see there's our little audio file. (music playing) And we'll go ahead and open this also in Chrome so you can see that one, and there is our audio file. (music playing) Now here in our HTML file, you see we have a little bit of JavaScript here at the top.
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  1. 5m 24s
    1. Welcome
      56s
    2. Using the exercise files
      1m 37s
    3. What you need to know about this course
      2m 51s
  2. 22m 0s
    1. What is HTML?
      4m 12s
    2. Examining the structure of an HTML document
      7m 50s
    3. Understanding tags and containers
      6m 4s
    4. Exploring content models in HTML5
      2m 23s
    5. Looking at obsolete elements
      1m 31s
  3. 27m 19s
    1. Understanding whitespace and comments
      3m 53s
    2. Displaying text with paragraphs
      3m 37s
    3. Applying style
      8m 5s
    4. Using block and inline tags
      6m 34s
    5. Displaying characters with references
      5m 10s
  4. 16m 36s
    1. Exploring the front matter of HTML
      2m 9s
    2. Applying CSS to your document
      3m 59s
    3. Adding scripting elements
      4m 54s
    4. Using the meta tag
      3m 34s
    5. Optimizing your page for search engines
      2m 0s
  5. 24m 59s
    1. Controlling line breaks and spaces
      2m 46s
    2. Exploring phrase elements
      1m 44s
    3. Using font markup elements
      1m 5s
    4. Highlighting text with mark
      1m 29s
    5. Adding headings
      1m 38s
    6. Using quotations and quote marks
      3m 2s
    7. Exploring preformatted text
      1m 45s
    8. Formatting lists
      2m 28s
    9. Forcing text direction
      3m 49s
    10. Suggesting word-break opportunities
      2m 29s
    11. Annotating East Asian languages
      2m 44s
  6. 29m 15s
    1. Introducing CSS
      55s
    2. Understanding CSS placement
      6m 55s
    3. Exploring CSS syntax
      10m 34s
    4. Understanding CSS units of measure
      3m 3s
    5. Some CSS examples
      7m 48s
  7. 22m 5s
    1. Using images
      4m 13s
    2. Flowing text around an image
      4m 55s
    3. Breaking lines around an image
      3m 3s
    4. Aligning images
      5m 25s
    5. Mapping links in an image
      4m 29s
  8. 22m 28s
    1. Understanding URLs
      2m 41s
    2. Working with hyperlinks
      3m 28s
    3. Using relative URLs
      4m 20s
    4. Specifying a base URL
      2m 19s
    5. Linking within a page
      4m 12s
    6. Using image links
      5m 28s
  9. 17m 2s
    1. Exploring list types
      3m 52s
    2. List elements in depth
      7m 44s
    3. Using text menus with unordered lists
      5m 26s
  10. 15m 30s
    1. Introduction to HTML semantics
      4m 9s
    2. Exploring an example
      4m 56s
    3. Marking up figures and illustrations
      2m 33s
    4. Creating collapsible details
      3m 52s
  11. 11m 18s
    1. Embedding audio
      5m 19s
    2. Embedding video
      5m 59s
  12. 11m 53s
    1. Creating ad-hoc Document Object Model (DOM) data with the data-* attribute
      4m 53s
    2. Displaying relative values with meter
      2m 57s
    3. Creating dynamic progress indicators
      4m 3s
  13. 4m 49s
    1. Overview of HTML5 microdata
      1m 8s
    2. Exploring an example with microdata
      3m 41s
  14. 7m 3s
    1. Understanding outlines
      52s
    2. A demonstration of outlining
      6m 11s
  15. 13m 1s
    1. Table basics
      7m 29s
    2. Exploring the semantic parts of a table
      2m 32s
    3. Grouping columns
      3m 0s
  16. 9m 55s
    1. Frames overview
      54s
    2. Using traditional frames
      4m 26s
    3. Exploring inline frames using iframe
      2m 7s
    4. Simulating frames with CSS
      2m 28s
  17. 53m 7s
    1. Introducing forms
      10m 24s
    2. Using text elements
      10m 12s
    3. Using checkboxes and radio buttons
      2m 37s
    4. Creating selection lists and dropdown lists
      5m 14s
    5. Submit and button elements
      8m 48s
    6. Using an image as a submit button
      2m 15s
    7. Keeping context with the hidden element
      3m 0s
    8. Setting tab order
      2m 7s
    9. Preloading an autocomplete list using the datalist feature
      5m 26s
    10. Displaying results with output
      3m 4s
  18. 19m 47s
    1. Touring a complete site
      2m 14s
    2. Touring the HTML
      8m 44s
    3. Touring the CSS
      8m 49s
  19. 29s
    1. Goodbye
      29s

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HTML Essential Training
5h 34m Beginner Sep 11, 2012

Viewers: in countries Watching now:

This course introduces web designers to the nuts and bolts of HTML (HyperText Markup Language), the programming language used to create web pages. Author Bill Weinman explains what HTML is, how it's structured, and presents the major tags and features of the language. Discover how to format text and lists, add images and flow text around them, link to other pages and sites, embed audio and video, and create HTML forms. Additional tutorials cover the new elements in HTML5, the latest version of HTML, and prepare you to start working with Cascading Style Sheets (CSS).

Topics include:
  • What is HTML?
  • Using HTML tags and containers
  • Understanding block vs. inline tags
  • Controlling line breaks and spaces in text
  • Aligning images
  • Linking within a page
  • Using relative links
  • Working with tables
  • Creating progress indicators with HTML5
  • Adding buttons and check boxes to forms
  • Applying CSS
  • Optimizing your pages for search engines
  • Building document outlines
Subjects:
Developer Web Web Foundations Web Development
Software:
HTML
Author:
Bill Weinman

Embedding audio

HTML5 provides a simple and powerful feature for embedding audio files in your web pages. Let's make a working copy of audio.html, and I'm just going to rename this to audio-working.html, open this in my text editor, and I'm also going to open it in a browser, and there is our Firefox browser. You can see there's our little audio file. (music playing) And we'll go ahead and open this also in Chrome so you can see that one, and there is our audio file. (music playing) Now here in our HTML file, you see we have a little bit of JavaScript here at the top.

We'll get back to that. And then the rest of the file is really very simple. There is our header, there is our audio, and there is the little form with the buttons at the bottom, and we'll show you those a little bit later as well. The first thing I want you to notice about this is that this audio control here, we have an audio container, and it contains these source tags, and each of these source tags refers to a different file with a different media type. And so we have an aac file, we have an mpeg file, and we have an ogg vorbis file.

And so those are three different encodings of the same media. And the reason for that is that different browsers support different encodings. So for example, this Firefox browser, if we come up here to the Tools menu and go into Web Developer > Web Console, we see this it failed to load the aac or the mpeg, the m4a or mp3 files, and those were the first two. And so what it did load is the ogg file. If we come back here up to the Tools menu and go to Page Info and come over here to Media, you see that song.ogg got loaded and here's the preview of it. (music playing) So we can close this, and we can close this, and let's look at the same effect here in Chrome.

In Chrome we can go in the View > Developer > Developer Tools and we can see under Resources, if we click on the Resources tab--it usually comes up at first under Console--but if you click on the Resources tab and under Frames and audio-working.html, that's our file there. You see in this XHR > song.MP3. thats the one that got loaded. And so if we come back over here into our source file, you see that that's the second one. So it wasn't able to load the aac, and instead it loaded the mp3 file.

This is without any JavaScript or anything; it's just loading that. These controls that you see on the screen, this here or in Firefox, this here, this is enabled with this controls attribute. And if I take that out and save it and reload it, you see there's no control anymore. And so the only way to control it in that case is with JavaScript. And so I've provided a few buttons here. Let's go over and see this in Chrome. We have the same effect. I'll reload this. You see the controls are gone and so we just have these buttons.

And these are the buttons here, and you see onclick, play, pause and rewind. And up here in our JavaScript, these are really simple: play, pause and rewind just sets the currentTime to 0. And so this audio element is just loaded with .document.getElementById, with the Id, and audio1 is the id that we set over here in the audio tag. And so once that's loaded, all you have to do is call play, pause, or set the currentTime to 0 on that object.

And there are actually quite a few different things that you can do with it. So you can create your own buttons and make this all fit with the look of your website and these buttons just work. (music playing) And it works exactly the same in Firefox. (music playing) So there's a couple of other attributes.

There's an autoplay attribute. If I save that and load this back up and reload it in the browser, tou see it just starts playing. (music playing) And put the controls back on. There is also a loop attribute. If I save that and reload this-- I am going to drag this out towards the end of the song here, and see it just starts back from the origin or beginning. (music playing) So you cannot style this controller with CSS, but you can leave off the controls attribute and create a custom audio player using JavaScript and whatever other elements fit in with the design of your site.

Of course you can make much more sophisticated controls, and you've probably seen examples of that around the Internet. By providing a selection of different encodings in the source tags, it's possible to support all of the modern browsers with your audio media.

Find answers to the most frequently asked questions about HTML Essential Training.


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Q: The horizontal nab bar built in Chapter 8 doesn't work correctly in Internet Explorer 8. Do you have a solution?
A: Internet Explorer 8 does not support HTML5 and the NAV element.

The nab bar can work in IE 8 if you change the nav element to div, and update the CSS accordingly. You will also need to move the "display: inline" from the "ul.menu li a" rule to the "ul.menu li" rule.
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