confirm，javascript弹出带有确定和取消的警告框，js弹出提示框，确定和取消提示框
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <HTML> <HEAD> <TITLE> New Document </TITLE> <META NAME="Generator" CONTENT="EditPlus"> <META NAME="Author" CONTENT=""> <META NAME="Keywords" CONTENT=""> <META NAME="Description" CONTENT=""> <script language='javascript' type='text/javascript'> function a(){ if(confirm('真的要注册超级管理员吗，注册后这个用户将有非常高的权限！')){ alert('1'); } } </script> </HEAD> <BODY > <input onclick="a()"> </BODY> </HTML>