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Despite the continually improving implementation of the W3C DOM and JavaScript in modern Web browsers, some quirks and incompatibilities still cause headaches when developing with the DOM and JavaScript. Internet Explorer has the most limited implementation of the W3C DOM and JavaScript. In the early 2000s, Internet Explorer by some accounts held more than 95 percent of the total browser market, and with no competition in sight, Microsoft chose not to completely implement the various Web standards. You can work around most of these quirks, although doing so makes the scripting messier and nonstandard. For example, a <tr> element added directly to a <table> using appendChild will not appear in Internet Explorer, but it does in other browsers. The workaround is to add the <tr> element to the table s <tbody> element. This workaround performs correctly in all browsers. Internet Explorer also has trouble with the setAttribute method. Internet Explorer won t correctly set the class attribute using setAttribute. The cross-browser workaround is to use both setAttribute("class", "newClassName") and setAttribute("className", "newClassName"). Also, you cannot set the style attribute using setAttribute in Internet Explorer. Instead of using <element>.setAttribute("style, "font-weight:bold;"), the most browsercompatible technique is <element>.style.cssText = "font-weight:bold;";. The examples in this book will adhere as closely as possible to the W3C DOM and JavaScript standards but will stray from the standards when necessary to ensure compatibility with most modern browsers.

Note In order to use the wsdl.exe and xsd.exe command-line tools from any directory location on your

How to install Drush on cPanel ................................................................................... 265 Popular Drush commands .......................................................................................... 266

The following example demonstrates how you can use the W3C DOM and JavaScript to dynamically create content. The example is a fictional search engine for real estate listings. Clicking the Search button on the form will retrieve the results in XML format using the XMLHttpRequest object. The response XML will be processed using JavaScript to produce a table that lists the results of the search (see Figure 3-3).

Development tools .................................................................................................. 269 Chaos tool suite ..................................................................................................... 269 Devel

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computer, you will probably need to set an environment variable that points to the directory location of the utilities. On our computer we created a user environment variable called PATH with a value of c:\Program Files\Microsoft Visual Studio 8\SDK\v2.0\BIN. Alternatively, if you are using Visual Studio 2005, from the Programs menu group you can select Visual Studio 2005 Tools Visual Studio 2005 Command Prompt.

.................................................................................................................. 270 .............................................................................................................. 270

Figure 3-3. The results of the search were created dynamically using W3C DOM methods and JavaScript. The XML returned by the server is simple (see Listing 3-5). The root properties node contains all the resulting property elements. Each property element contains three child elements: address, price, and comments. Listing 3-5. dynamicContent.xml < xml version="1.0" encoding="UTF-8" > <properties> <property> <address>812 Gwyn Ave</address> <price>$100,000</price> <comments>Quiet, serene neighborhood</comments> </property> <property> <address>3308 James Ave S</address> <price>$110,000</price> <comments>Close to schools, shopping, entertainment</comments> </property>

If you are following the steps in this chapter, your only option for generating an IDC file at this point is to partially generate it using xsd.exe and the XSD schema file. You have not yet defined the operations anywhere other than by design in the initial UML diagram in step 1. So your next step is to use the UML diagram to manually add abstract class definitions to the autogenerated IDC file. This is the approach we always take because it is far easier than the alternative, which is to generate WSDL by hand. Generating WSDL manually is prone to errors and takes far longer than it will take you to update a few lines in code, as is the case with the partially generated IDC file.

Drupal For Firebug .................................................................................................. 270 Features

<property> <address>98320 County Rd 113</address> <price>$115,000</price> <comments>Small acreage outside of town</comments> </property> </properties> The JavaScript for actually sending the request to the server and responding to its response is the same as previous examples The differences begin in the handleReadyStateChange function Assuming the request completes successfully, the first thing that happens is that the content created by any previous searches is deleted by calling the clearPreviousResults function The clearPreviousResults function performs two tasks: removing the Results header text that appears at the top and clearing any rows from the results table The header text is removed by first checking to see whether the span that surrounds the header text has any children by using the hasChildNodes method.

Implement the Interface Definition in the Web Service (Step 4)

Context ................................................................................................................ 270 Spaces ................................................................................................................ 271 Strongarm ............................................................................................................ 271 Site-building tools .................................................................................................... 271 Automatic Nodetitles ............................................................................................... 271 Custom Breadcrumbs .............................................................................................. 271 Custom Search ...................................................................................................... 272 Flag .................................................................................................................... 272 Menu attributes ...................................................................................................... 272 Menu block ........................................................................................................... 273 Nice Menus ........................................................................................................... 273 Nodequeue ........................................................................................................... 273 Panels ................................................................................................................. 273 Rules

Site map............................................................................................................... 274

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