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- <!DOCTYPE html>
- <html>
- <head>
- <title></title>
- <script type="text/javascript">
- function validasi_input(form){
- var mincar = 5;
- if (form.username.value.length < mincar){
- alert("Panjang Username Minimal 5 Karater!");
- form.username.focus();
- return (false);
- }
- return (true);
- }
- </script>
- </head>
- <body>
- <form method="post" action="aksi.php" onsubmit="return validasi_input(this)">
- <p>Username: <input name="username" type="text"></p>
- <p><input name="" type="submit" value="submit"></p>
- </form>
- </form>
- </body>
- </html>
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