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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html> <head> <title></title> <meta http-equiv="content-type" content="text/html;charset=utf-8"> <meta name="keywords" content="html,javascript,css"> <script type="text/javascript"> function denglu() { var userno=document.getElementById("userno").value; var userpwd=document.getElementById("userpwd").value; if(userno=="") { return false; } else if(userpwd=="") { return false; } else { return true; } } </script> </head> <body> <form id="form1" action="test_login_handle.php" method="post"> <div>帳號：<input type="text" id="userno" placeholder="輸入使用者帳號" /></div> <div>密碼：<input type="password" id="userpwd" placeholder="輸入使用者密碼" /></div> <div><input type="submit" value="登入" onclick="return denglu()" /></div> </form> </body></html><!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html> <head> <title></title> <meta http-equiv="content-type" content="text/html;charset=utf-8"> <meta name="keywords" content="html,javascript,css"> <script type="text/javascript"> function denglu() { var userno=document.getElementById("userno").value; var userpwd=document.getElementById("userpwd").value; if(userno=="") { return false; } else if(userpwd=="") { return false; } else { return true; } } </script> </head> <body> <form id="form1" action="test_login_handle.php" method="post" onsubmit="return denglu()"> <div>帳號：<input type="text" id="userno" placeholder="輸入使用者帳號" /></div> <div>密碼：<input type="password" id="userpwd" placeholder="輸入使用者密碼" /></div> <div><input type="submit" value="登入" /></div> </form> </body></html><<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html> <head> <title></title> <meta http-equiv="content-type" content="text/html;charset=utf-8"> <meta name="keywords" content="html,javascript,css"> <script type="text/javascript"> function denglu() { var userno=document.getElementById("userno").value; var userpwd=document.getElementById("userpwd").value; if(userno=="") { return false; } else if(userpwd=="") { return false; } else { document.form1.submit(); } } </script> </head> <body> <form id="form1" action="test_login_handle.php" method="post"> <div>帳號：<input type="text" id="userno" placeholder="輸入使用者帳號" /></div> <div>密碼：<input type="password" id="userpwd" placeholder="輸入使用者密碼" /></div> <div><input type="button" value="登入" onclick="denglu()" /></div> </form> </body></html>
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