1. One or more storage media comprising computer-executable instructions that, when executed by a computer, perform acts comprising: retrieving scripting information based on a web page, the scripting information indicating a scripting file; analyzing the scripting file to determine a function that includes a call associated with an asynchronous web application that is associated with the web page; and simulating a user operation corresponding to the function associated with the web page; and in response to the user operation, calling the function to generate content associated with the web page.