Created
October 18, 2013 13:47
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Textarea com contagem de caracteres
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| <html> | |
| <head> | |
| <meta charset="UTF-8"> | |
| <title>Titulo</title> | |
| <link rel="stylesheet" type="text/css" href="estilo.css"/> | |
| <style rel="stylesheet" type="text/css"> | |
| .red { | |
| color: red; | |
| } | |
| </style> | |
| </head> | |
| <body> | |
| <form action="http://www.headfirstlabs.com/contest.php" method="POST" | |
| onsubmit="return valida();"> | |
| <p>Primeiro nome: <input id="firstname" type="text" name="firstname"/></p> | |
| <p>Último nome: <input id="lastname" type="text" name="lastname"/></p> | |
| <p> | |
| Mensagem: | |
| <textarea cols="80" rows="10" id="msg" name="msg" | |
| onkeyup="conta_caracteres()"> | |
| </textarea><br/> | |
| (<span id="txt_info"></span>) | |
| </p> | |
| <input type="submit" value="enviar"/> | |
| </form> | |
| <script language="javascript"> | |
| function conta_caracteres() { | |
| txt = document.getElementById('msg'); | |
| txt_info = document.getElementById('txt_info'); | |
| if (txt.value.length > 200) { | |
| txt.value = txt.value.substring(0, 200); | |
| } else { | |
| txt_info.innerHTML = (200 - txt.value.length) + " caracteres restantes"; | |
| txt_info.className = ""; | |
| } | |
| } | |
| function valida() { | |
| txt = document.getElementById('msg'); | |
| if (txt.value.length > 200) | |
| return false; | |
| return true; | |
| } | |
| </script> | |
| </body> | |
| </html> | |
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