JavaScript检查大写键（Caps Lock）是否打开
<! DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <HTML> <HEAD> <TITLE> Detect Caps Lock </TITLE> <script> 
function detectCapsLock(e){ 
valueCapsLock = e.keyCode ? e.keyCode:e.which; // Caps Lock 是否打开 valueShift = e.shiftKey ? e.shiftKey:((valueCapsLock == 16 ) ? true : false ); // shift键是否按住 if (((valueCapsLock >= 65 && valueCapsLock <= 90 ) && ! valueShift) // Caps Lock 打开，并且 shift键没有按住 || ((valueCapsLock >= 97 && valueCapsLock <= 122 ) && valueShift)) // Caps Lock 打开，并且按住 shift键 document.getElementById('capStatus').style.visibility = 'visible'; else document.getElementById('capStatus').style.visibility = 'hidden'; 
/* 
javascript中keyCode代码对应表 event.keyCode=32 空格 event.keyCode=13 回车 event.keyCode=27 Esc event.keyCode=16) Shift event.keyCode=17) Ctrl event.keyCode=18) Alt 
*/ 
} </script> </HEAD> <BODY> <input type ="password" name ="pwd" onkeypress ="detectCapsLock(event)" /> <div id ="capStatus" style ="visibility:hidden"><font color =red> Caps Lock is on. <font></div> </BODY> </HTML> 本文来自: 脚本之家(www.jb51.net) 详细出处参考：http://www.jb51.net/article/10447.htmposted on 2008-01-15 22:45 Above The Sky 阅读(230) 评论(0) 编辑 收藏 举报
