namae ireroya boke

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="ja" lang="ja"> <head> <meta http-equiv="Content-Type" content="text/html;charset=UTF-8" /> <link href="tab.css" rel="stylesheet" type="text/css"> <script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/jquery/1.9.0/jquery.min.js"></script> <script> $(function(){ $("form").submit(function(){ if($("input[name='name']").val()==""){ $("input[name='name']").css("border","1px solid red") .after("<span>名前入れろ</span>"); $("span").css({ "color":"red", "font-weight":"bold" }); return false; } }); }); </script> </head> <body> <form method="post"> <dl> <dt>お名前:<input type="text" name="name"></dt> <dd><input type="submit" value="送信da!"></dd> </dl> </form> </body> </html>

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