Building a Web site with Ajax by Larry Ullman

By Larry Ullman

Ajax is on the middle of the net 2.0 revolution. it's not a know-how yet, relatively, is a method that leverages different applied sciences and methods, similar to CSS, XML, DHTML, and XHTML. Many internet designers and programmers want to comprise Ajax of their tasks due to the awesome performance it could actually upload to an internet site, yet they can not end result of the steep studying curve. that is the place this ebook steps in. It makes studying Ajax enjoyable and simple -- an excellent spot to begin! visible QuickProject publications concentrate on a unmarried undertaking. consequently the undertaking is making a company worker listing, like an tackle e-book. what is being created is a greater, new type of site.

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In other words, when the form is submitted, do the following… 30 browsing using Ajax 3 Provide to the ajax object the name of the page that should be sent the request. php, to be written next. The request will be made using the get method. 4 As part of that request, the department ID value (from the form) will be passed along in the URL. onreadystatechange = function() { handleResponse(ajax); } 5 When the ajax object’s readyState value changes, the handleResponse() function should be called, passing that function this same ajax object.

This alone can be a great help. 42 browsing using Ajax 4. adding records In the first chapter we created the database structure for this employee listing Web site. In the previous two chapters, we developed an Ajax as well as a non-Ajax approach for browsing the employees by department. 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.

These employees come from the database created in Chapter 1. 3 Because the PHP page’s results come from a database, a special PHP script will be written on pages 18 solely for the purpose of connecting to the database. 4 On pages 19-20, a very simple style sheet will be made and added to the HTML page, giving the Web pages a slightly (but only slightly) more attractive appearance. 5 As a last step, we’ll test what we’ve built to make sure it all works. At the end of this chapter, in the extra bits section, you’ll find more information, tips, and recommendations regarding all of these steps.

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