4/07/2011 Notes

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IT 130 -- 4/07/2011

Review Questions

What is the name of the file on students.depaul.edu into which your HTML files are uploaded?
Ans: public_html
Suppose that you have composed an HTML page using the Notepad Editor and uploaded it to the server using SSH. However, the page is blank or does not appear at all. List some things that might be wrong?
Ans:
1. You might not have saved the page in Notepad after editing it.
2. You might not have refreshed the page after uploading it.
3. You might have spelled public_html incorrectly.
4. You might not have uploaded the page into the public_html folder.
5. you might have created the public_html file inside the mail folder.
6. You might have forgotten the </title> tag.
7. You might have forgotten a --> tag.
8. You might have omitted a closing " or a closing >.
9. You might have the double version problem: you are editing one version and uploading and viewing a different version.
10. The permissions for the page or folders containing it are incorrect.
You are trying to save an HTML page on the C: drive in the lab and you get the message "Unable to create the file mypage.htm. Access is denied." What is wrong?
Ans: In some DePaul computer labs you are not allowed to save files directly on the C: drive. Create a folder on the C: drive and put the file in that folder.
You upload a file to the server, then delete the original file on your PC. Does the uploaded file still exist?
Ans: Yes, there is no connection between the two files after the copy is performed.
Write a span tag with an inline style that will change the word really in a sentence to red italic like this:
Ans:
What happens if you forget to include the matching end tag for a tag?
Ans: The style defined in the span tag will continue until a tag is encountered or to the end of the document.
Give a tag in HTML that does not require a matching end tag. Look at Example 2.
Ans:
What does   mean?
Ans: Non-breaking space. The text on either side of the non-breaking space will not be split across two lines.

Rules for XHTML

Every tag requires a matching end tag.
Tags must be nested. Do this:
not this:
Use combination start-end tag when there is nothing between the start and end tag.
Use instead of . Using simply is not legal in XHTML.
Use double quotes for attribute values in a tag. Do this:
not this:
Use and instead of and .
Optional. Include this header tag at the beginning of an XHTML file:

Inline CSS Styles

An example inline style:
<body style="background-color:silver">
In the preceding style, body is the HTML element, background-color is the property and silver is the value.
An inline style can have more than one property-value pair:
Use the span element to change the style of text within a paragraph:
Modify the preceding span tag to triple the font size of the entire sentence, change the text color to red, and change the background color of the page to magenta.
Ans:
List the CSS properties and corresponding values that we have seen in the examples so far.
See Cascading Style Sheet References for more details.
For even more examples of CSS styles, see www.w3schools.com.

The Nonbreaking Space Symbol (and other HTML character entities)

The ampersand (&) denotes a special symbol in HTML/XHMTL.
The nonbreaking space (HTML special symbol:  ) denotes a space that cannot be eliminated by a browser or broken across lines of text.
Repeated ordinary spaces between words are reduced to one space by the browser.
Use   if you want more than one space between two words.
Here are a few of the hundreds of HTML character entities:
For a more complete list of character entities see: Character Entities or A Simple Character Entity Chart.