Webpage language switching method and device as well as network application system

The invention is suitable for the field of computer software and provides a webpage language switching method and device as well as a network application system. The method comprises the following steps of: when a browser starts to analyze and generate a webpage, constructing an international object; registering all elements generated by the webpage into the international object, and simultaneously, registering a language switching event interface for the element needing to realize language switching; when a webpage language switching request is received, calling the international object, and traversing all elements in the international object; and when the traversing result shows that the element is registered with the language switching event interface, downloading the resource of the element, and calling the language switching event so as to update the content of the element. In the invention, the international object is dynamically constructed according to the webpage, and multi-language switching can be