Goto Extension Detail, click "backgroud page", and type your scripts in the console.
                         
                    
                        Extract current page:
                        
new Extractor().task(".list-item", ["a.title", "p.content"]).start();
                    
                        Extract multiple pages (1-10, interval 1):
                        
new Extractor().task(".list-item", ["a.title", "p.content"],
                        "http://sample.com/?pn=${page}", 1, 10, 1).start();
                    
                        Full document:
                        
                        https://git.jebbs.co/jebbs/data-extracter-extesion