Recently, the extraordinarygrowth in the World Wide Web has been sweeping through business and industry. Many companies have developed or integrated their mission-critical applications using Webtechnologies.As Web applications become complex, testing Web applications becomes crucial. Thispaper extends traditional dataflow testing techniques to Web applications. Several data flow issuesfor analyzingHTML documents in Webapplications are discussed A test model that captures data flow lest artifacts of Web applications is presented In the test model, each component of a Webapplication is modeled as an object. The dataflow information of the Web application is captured using flow graphs. From the test model, dataflow test casesfor the Web application then can be derived based on the intra-object, inter-object, and interclientperspectives.