Hendripanjaitan

HTML + JS Validasi Pilihan Radio Button.

Sep 10th, 2016
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  1. <!DOCTYPE html>
  2. <html>
  3. <head>
  4.     <title></title>
  5.     <script type="text/javascript">
  6. function validasi_input(form){
  7.   function check_radio(radio) {
  8. <!-- memeriksa apakah radio button sudah ada yang dipilih -->
  9.     for (i = 0; i < radio.length; i++)
  10.    {
  11.      if (radio[i].checked === true)
  12.      {
  13.        return radio[i].value;
  14.      }
  15.    }
  16.   return false;
  17.   }
  18.  
  19.   var radio_val = check_radio(form.jk);
  20.   if (radio_val === false)
  21.    {
  22.      alert("Anda belum memilih Jenis Kelamin!");
  23.      return false;
  24.    }
  25.   return (true);
  26. }
  27. </script>
  28. </head>
  29. <body>
  30. <form method="post" action="aksi.php" onsubmit="return validasi_input(this)">
  31. <p>Jenis Kelamin: <input type="radio" name="jk" value="L">Laki-Laki
  32. <input type="radio" name="jk" value="P">Perempuan</p>
  33. <p><input name="" type="submit" value="submit"></p>
  34. </form>
  35.  
  36. </body>
  37. </html>
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