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HTML Essential Training
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Exploring an example with microdata


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HTML Essential Training

with Bill Weinman

Video: Exploring an example with microdata

This is an example of a very simple microdata vocabulary called Thing. You can find this schema.org/Thing, with a capital T. You notice that it has very few names: additional type, description, image, name and URL; it's a very simple microdata vocabulary for describing a thing. So we're going to go ahead and use this microdata vocabulary to describe our scissors. We're not actually going to edit this file; it's already set up, so I'm just going open it in the text editor so that you can see it.
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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

Exploring an example with microdata

This is an example of a very simple microdata vocabulary called Thing. You can find this schema.org/Thing, with a capital T. You notice that it has very few names: additional type, description, image, name and URL; it's a very simple microdata vocabulary for describing a thing. So we're going to go ahead and use this microdata vocabulary to describe our scissors. We're not actually going to edit this file; it's already set up, so I'm just going open it in the text editor so that you can see it.

It's mostly exactly the same document that we've seen before. It has the scissors. You see, I've added a paragraph describing the scissors. But other than that, it's exactly the same. It's got all of this Lorem Ipsum. And it's got in this aside sidebar, I've also added just these attributes-- itemscope, itemtype, itemprop--to add the microdata to the existing content. And so when we look at this in the browser, we see it's exactly the same page except I've got this added paragraph to it describing the scissors. Other than that, nothing has changed. You see the sidebar looks exactly the same.

Now if we come up here at the top, we take a look at where I've actually added stuff, in the main div I have item scope. item scope means this is the scope of the microdata, and item type refers to the microdata vocabulary. We have itemprop image, itemprop name, itemprop description, and those are just attributes. I'm not changing any content. I'm just using existing content, so it really doesn't do anything to the content whatsoever. If I come down here into the sidebar, you see I have itemscope on each of these sections, and it points to that same thing vocabulary. And I have itemprop name for the h1, and itemprop description for the paragraph. And I did that for each of these.

So let's go ahead and test this microdata. I'm going to open another tab here in the browser. I'm just going to type in http://www.google.com/ webmasters/tools/richsnippets. Rich snippets is Google's name for microdata and in their Webmasters tools they have this rich snippets testing tool for testing your microdata to see how a search engine would interpret it. And so I come back here to my HTML file.

I'm just going to select the entire file and press Copy on my keyboard, paste it into this text box here on the Google Webmaster tools page, and I'm going to click on Preview. And so now they have parsed our microdata and they've come up with these items down here. So for each of these items, it's got the type is the schema.org/thing vocabulary. You notice they're spelling it with a lowercase t; it's actually spelled with an uppercase T, and it doesn't work if you use lowercase t in your source file.

And so it finds the image of the scissors. It finds the name of the scissors. It finds a description of the scissors. Scissors are cutting-edge technology. They use there cutting edges to cut things. They are scissors. They're orange. They rule. And it also finds for each of these items the blades, the handles, the colors. And so this is all just because I put that microdata in the file. It doesn't change the content at all; it's just adding attributes to the existing tags. Microdata is a new technology. It shows some promise for being able to help with search engine results and other application that require a script to know more about a web page that may be discernible from normal markup.

This is a simple example of how it could be applied to show a search engine more about a web page.

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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