The present invention provides a system for detecting and recording a user operation with respect to a web application. This system extracts from an application screen both a character string input element for the user to input a character string and an execution instruction element for instructing the web application to execute a prescribed operation. This system infers the role of the character string input element and execution instruction element in the web application. This system associates the character string input element with the execution instruction element, and extracts an inputted character string, which is inputted to the character string input element. This system creates user operation record data, which is recorded with a user operation, based on template data and the inputted character string.