Adobe 38040334 User Guide - Page 445

DREAMWEAVER CS3 438 User Guide For example, if you wanted to display the word "Unavailable" next to the price of an item when the item is unavailable, you type the text "Unavailable" on the page, select it, and then apply a conditional region to the selected text. Dreamweaver surrounds the selection with tags, and only displays the word "Unavailable" on the page when the data match the conditions of the conditional expression. Apply a conditional XSLT region You can write a simple conditional expression to insert into your XSLT page. If content is selected when you open the Conditional Region dialog box, the content will be wrapped in an block. If you content is not selected, the block is added at the insertion point on the page. It's a good idea to use the dialog box to get started and then customize the expression in Code view. The element is similar to the if statement in other languages. The element provides a way for you to test a condition and take a course of action based on the result. The element allows you to test an expression for a single true or false value. 1 Select Insert > XSLT Objects > Conditional Region or click the Conditional Region icon in the XLST category of the Insert bar. 2 In the Conditional Region dialog box, enter the conditional expression to use for the region. In the following example, you want to test to see if the context node's @available attribute value is true. 3 Click OK. The following code is inserted in your XSLT page: Content goes here Note: You must surround string values such as true in quotes. Dreamweaver encodes the quotes for you (') so that they are entered as valid XHTML. In addition to testing nodes for values, you can use any of the supported XSLT functions in any conditional statement. The condition is tested for the current node within your XML file. In the following example, you want to test for the last node in the result set: September 4, 2007