CSC 341: The Week beginning Sept. 16

Homework:

1. Watch the video JavaScript & jQuery Tutorial for Beginners - 1 of 9 - Getting Started, make a variation of the demo (you must minimally change the text), post it on your alpha site (or other web server you have) and email me the URL.

2. Read and summarize the article The PHP popularity puzzle (InfoWorld). Email the summary.

3. Make one HTML and two PHP documents. The HTML page should have two forms. Each form should have two text inputs. The first form should use the GET method and have an action of the first PHP page. The second form should use the POST method and have an action of the second PHP page. In addition to echoing back the user's input, the PHP pages should explain the differences between the GET and POST methods. (See for example http://www.w3schools.com/tags/ref_httpmethods.asp.) Post the pages and email me the URL.

Due: Sept. 23
Monday:

Lab
- Make two PHP pages -- the first one should include a form having the second page as an action and using the GET method
- Both pages should include at the top of the body the PHP code for error reporting http://php.net/manual/en/function.error-reporting.php
- Use the array head start found in Statetax_1.txt to populate a drop-down select with state names.
- The second page should validate that the user input for the amount is a number and that it is greater than or equal to zero. http://php.net/manual/en/function.is-numeric.php
- Use the array head starts found in Statetax_1.txt and Statetax_2.txt. Search one array for the state entered by the user, then use the corresponding sales tax element from the second array. http://php.net/manual/en/function.array-search.php (array search)
- The amount, tax, and total should be formatted as currency. http://stackoverflow.com/questions/294865/how-do-i-format-a-number-to-a-dollar-amount-in-php
- Both pages should have some style.
- Both pages should have metatags.
Reference: http://www.salestaxinstitute.com/resources/rates

Due: Sept. 23 (Zip up all code and email it)
Wednesday

Demo of htmlspecialchars method HTMLspecialcharsDemo.htm HTMLspecialcharsDemo.zip

Demo of a single-page session variable: SessionSinglePage.php SessionSinglePage.zip

Demo of a two-page session variable (PHP writes JavaScript that sets value of input text): SessionDemo1.php SessionDemo2.zip

Variation of above where PHP writes directly to HTML value SessionDemo1a.php SessionDemo1a.zip

Session variables versus cookies CookieDemo.php CookieDemo.zip

ArraySearch.zip We wrote a quick demo program to review an array search.

In class demo -- adapt last week's state drop-down select demo so that it uses a session variable to remember what state has been selected by the user. This is as far as we got: State_drop_down_select_revised.zip