Building a Web Site with Ajax: Visual QuickProject Guide by Larry Ullman

By Larry Ullman

Ajax is on the middle of the internet 2.0 revolution. it's not a expertise yet, quite, is a method that leverages different applied sciences and methods, similar to CSS, XML, DHTML, and XHTML. Many net designers and programmers wish to include Ajax of their initiatives a result of notable performance it will possibly upload to an internet site, yet they can not a result of steep studying curve. that is the place this booklet steps in. It makes studying Ajax enjoyable and simple -- a great spot to begin! visible QuickProject publications concentrate on a unmarried venture. therefore the venture is making a company worker listing, like an tackle ebook. what is being created is a greater, new form of website.

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Sample text

Mysql_select_db (‘ajax’)) { echo ‘

The site is currently experiencing technical difficulties. > 3 Error messages are printed if either attempt fails. If so, the script then terminates because there’s no need to go on without a database connection. 4 Save this file as mysql. html. 18 browsing employees create a style sheet The CSS style sheet is a separate document that dictates how the pages look. Create a new file in your test editor or IDE, containing this code. error { font-weight: bold; color: #C00 } #results { border: medium solid #390; display: none; padding-left: 10px; width: 300px; } The body section sets the default font for the entire HTML page.

In this chapter, let’s create a way to add employees to the database. Naturally we’ll start with the non-Ajax version, for universal accessiblity, and then add the Ajax-enabled version in the next chapter. To begin, we’ll start by creating the HTML form that takes all the requisite data. Then we’ll write the PHP script that handles the form submission in a non-Ajax way. This will all be fairly basic PHP form handling. 43 what we’ll do 1 First, on pages 45-48, we’ll create an HTML page with a form.

3 Query the database, looking for employees in the given department. 4 Fetch any returned records and print them with a little bit of HTML and CSS formatting. 16 browsing employees report on any errors The PHP script should let the user know if an error occurred. Complete the two IF conditionals created in the previous steps. > … 1 The first else clause will apply if the database query didn’t return any results. 2 The second else clause will apply if the PHP script did not receive a valid department ID.

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