Lab Create Image using DOM

1. Open Nvu
2. Hand code a javascript that loads an image from Internet based on
the DOM model.
3. Take a look at the sample code that shows how window.onload to load the image.
4. Use a button to load the image. Try how onclick works.

DOM, Document Object Model

操作以下這個網頁
web personalization 網頁個人化
你會不會覺得有點神奇, 它是如何做到的?
關鍵就在 DOM.

With the DOM scripting methods you can:

- Create new elements on the fly.
- Grab all the tags of the document, or grab the text without grabbing the tag text.
- Insert new text, and change or remove text from any element.
- Move whole parts of the document around, or remove parts as fragments and work with them.
- And the best part: all of these new methods should work in any DOM compliant browser. No more browser sniffing. No need to build different versions of the same page for different browsers.

Reference:
Scripting For The 6.0 Browsers, By Scott Andrew LePera

createElement() allows you to create a new tag.

myImg = document.createElement("IMG")

Give definition.

In the above example, our newly born tag has no ID, no SRC and no home in the document yet. So let's give it some definition:

myImg.setAttribute("id","imageOne")
myImg.setAttribute("src","jabberwocky.gif")

Append it within the document "tree".

Now all we need to do is append it to the document body. And to do that, we use the DOM node method appendChild():

docBody = document.getElementsByTagName("body").item(0)
docBody.appendChild(myImg)

Lab XML

1. Given the RSS of Class Blog, write an XSLT fileand use Xray to generate an HTML that contains the titles of items in the RSS.

2. Open the XML file by Word and you will see the document structure.

3. View the formatted HTML file.

Homework 12-1-2008

Lab XML (2)

Lab XML (2)

1. Register and Download Xray, an XML, XSLT editor and processor.

2. Given the
Listing 1. An XML document representing the results of a soccer tournament
Listing 2. A basic style sheet for the soccer results

use the XSLT as in the Listing 2 to transform the XML file as in the Listing 1.
(archive)

3. View the formatted HTML file.
4. Given the
Listing 1. An XML document representing the results of a soccer tournament
Listing 3. A style sheet that computes team standings

compute the team standings in a table.

5. View the formatted HTML file.

Lab XML

1. Register and Download Xray, an XML, XSLT editor and processor.

2. Given the the XML file and XSLT file ,
use Xray to do the transformation of the XML into HTML.
You have to replace [ with <.

3. View the formatted HTML file.

XML

Take a look at islandwide temperatures of Taiwan.

What happens if you just want Taoyuan's temperature?

If you want to include Taoyuan's temperature in your Theme
Park homepage, is there any solution?

XML examples:

• atom of Blog,

• Zip Code Web Service

• News Syndication
• http://140.135.8.178/bgbg/lihung.html
  Input 2008 4 7 8 55

the need of XML

Separation of data from data processor

Seperation of data from presentation

• HTML for machine-human interaction

• XML can be formatted to HTML according to formartting rules called XSLT. To see it, do Lab XSLT.

Automation of data flow across various business systems

• XML for machine-machine interaction

• Without human involvement, automation of business systems can be accelerated.

What kind of language is XSLT?

• An XSLT style sheet is an XML document.
• The basic processing paradigm is pattern matching.

Operation of an XSLT Processor

參考資料
XSLT(專業ASP.NET XML程式設計 - 使用C#)