CHAPTER 3 WEB VOCABULARIES Validity (Free web hosting music) is an
CHAPTER 3 WEB VOCABULARIES Validity is an important concept for web developers because creating valid documents guarantees that your web site is interoperable with virtually any XML application. A number of online tools can check XHTML documents for validity. Online Validators In addition to the tools I mentioned previously, several web sites offer free online validation services. You can use them to check that your document is valid against specific versions of the XHTML specification. Two popular online validators include W3C Markup Validation Service: http://validator.w3.org/ WDG HTML Validator: http://www.htmlhelp.com/tools/validator/ I ll validate one of the XHTML documents that you saw previously to show you how the W3C Markup Validation Service works. You need to use the Validate by File Uploadoption to validate an offline file. Open the web site (http://validator.w3.org/) and click the Browse button to select your file. In Figure 3-3, I m validating the file marsstrict.htm. Figure 3-3. Uploading a file for validation at the W3C Markup Validation Service Click the Check button to validate the document. After validating, you can see whether the document is valid. You also might see some other messages about the page, as shown in Figure 3-4.
Note: In case you are looking for affordable and reliable webhost to host and run your j2ee application check Vision j2ee hosting services