Selenium several ways to manipulate the scroll bar

1. Manipulate the scroll bar to the element position of the currently visible view

    webelement element = Dr.findelement (By.id ("4"));    ((Javascriptexecutor) DR). Executescript ("Arguments[0].scrollintoview (true);", Element);

Or

    New Actions (DR);    A.movetoelement (Dr.findelement (By.id ("4")). Perform ();

2. Operate the scroll bar to the bottom or top of the

        New Actions (DR);        A.sendkeys (Keys.page_down). Perform ();         Try {            Thread.Sleep (+);         Catch (interruptedexception e) {            //  TODO auto-generated catch block             E.printstacktrace ();        }        A.sendkeys (KEYS.PAGE_UP). Perform ();

Or

        String js = "document.documentelement.scrolltop=10000";        ((Javascriptexecutor) DR). Executescript (JS);         = "Document.documentelement.scrolltop=0";        ((Javascriptexecutor) DR). Executescript (JS1);

Or

        String js = "document.getElementById (\" Su\ "). scrolltop=10000";        ((Javascriptexecutor) DR). Executescript (JS);         = "document.getElementById (\" Su\ "). Scrolltop=0";        ((Javascriptexecutor) DR). Executescript (JS1);

Selenium several ways to manipulate the scroll bar