W3School TIY
编辑您的代码：
<!DOCTYPE HTML> <html> <body> <script type="text/javascript"> if (sessionStorage.pagecount) { sessionStorage.pagecount=Number(sessionStorage.pagecount) +1; } else { sessionStorage.pagecount=1; } document.write("Visits " + sessionStorage.pagecount + " time(s) this session."); </script> <p>刷新页面会看到计数器在增长。</p> <p>请关闭浏览器窗口，然后再试一次，计数器已经重置了。</p> </body> </html>
查看结果: