日期:2014-05-17 浏览次数:20829 次
<html> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>锦城之恋在线考试系统</title> </head> <body> <marquee scrolldelay="500" scrollamount="100" bgcolor="ffaaaa" >欢迎来到XX系统</marquee> <table width="1002" height="400" border="0" align="center" cellpadding="0" cellspacing="0" > <form name="form1" method="POST" action="shenfen.jsp" > <p><span>身份:</span> <select name="add" style="width:140;"> <option value="A" selected="selected">A</option> <option value="B">B</option> <option value="C">C</option> </select></p> 姓 名: <input type="text" name="name" style="width:140;" /><br> 密 码: <input type="password" name="pwd" style="width:140;" /><br> <input type="submit" value="登陆" /> <input type="reset" value="重置" /> </form> </table> </body> </html>
<html> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>锦城之恋在线考试系统</title> <script> function check(f){ if( f.name.value == '' ){ alert('name is null') return false; } if( f.pwd.value == '' ){ alert('pwd is null') return false; } } </script> </head> <body> <marquee scrolldelay="500" scrollamount="100" bgcolor="ffaaaa" >欢迎来到XX系统</marquee> <table width="1002" height="400" border="0" align="center" cellpadding="0" cellspacing="0" > <form name="form1" method="POST" action="shenfen.jsp" onsubmit="return check(this)"> <p><span>身份:</span> <select name="add" style="width:140;"> <option value="A" selected="selected">A</option> <option value="B">B</option> <option value="C">C</option> </select></p> 姓 名: <input type="text" name="name" style="width:140;" /><br> 密 码: <input type="password" name="pwd" style="width:140;" /><br> <input type="submit" value="登陆" /> <input type="reset" value="重置" /> </form> </table> </body> </html>
------解决方案--------------------
用jQuery中的validation好啊
你也可以自己写,你找的那种样式就是增加一个失去焦点的事件(onblur)
<html> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>锦城之恋在线考试系统</title> </head> <script type="text/javascript"> function checkName(){ if(document.getElementById("name").value==""){ //这里写你要提示的操作 } } </script> <body> <marquee scrolldelay="500" scrollamount="100" bgcolor="ffaaaa" >欢迎来到XX系统</marquee> <table width=&