为什么没弹出确认框?
<!DOCTYPE html> <html> <head> <title> new document </title> <meta http-equiv="Content-Type" content="text/html; charset=gbk"/> <script type="text/javascript"> function openWindow(){ var openwindow=confirm("是否打开"); // 新窗口打开时弹出确认框,是否打开 if(openwindow==true) { window.open('http://www.imooc.com','_blank','width=400,height=500,menubar=no,toolbar=no'); } else { document.write("bye"); } } </script> </head> <body> <input type="button" value="新窗口打开网站" onclick="openWindow()" /> </body> </html>