eltiare/gist:244625

## gistfile1.htm
<html>
  <head>
    <title>Testing</title>
  </head>
  <body>
    <form action="./" method="post">
      <input type="text" name="question[id]"/>
      <input type="text" name="question[text]" />
      <input type="text" name="question[user][email]" />
    </form>

    <script type="text/javascript">
      inputs = document.getElementsByTagName('input');
      json_var = {};
      for (i=0; input = inputs[i]; i++) {
        parts = input.name.split(/[\[\]]+/);

        if (parts.length > 1) {
          parts.pop(); // The last value will always be an empty string
          if (json_var[parts[0]] === undefined) { json_var[parts[0]] = {}; }
          obj = json_var[parts[0]];
          for (i2=1; name = parts[i2]; i2++) {
            // If last iteration
            if (i2 == parts.length - 1) {
              obj[name] = input.value;
            } else {
              if (obj[name] === undefined) { obj[name] = {}; }
              obj = obj[name];
            }
          }
        } else {
          json_var[parts[0]] = input.value;
        }
      }

      console.info(json_var);
    </script>
  </body>
</html>
	<html>
	<head>
	<title>Testing</title>
	</head>
	<body>
	<form action="./" method="post">
	<input type="text" name="question[id]"/>
	<input type="text" name="question[text]" />
	<input type="text" name="question[user][email]" />
	</form>

	<script type="text/javascript">
	inputs = document.getElementsByTagName('input');
	json_var = {};
	for (i=0; input = inputs[i]; i++) {
	parts = input.name.split(/[\[\]]+/);

	if (parts.length > 1) {
	parts.pop(); // The last value will always be an empty string
	if (json_var[parts[0]] === undefined) { json_var[parts[0]] = {}; }
	obj = json_var[parts[0]];
	for (i2=1; name = parts[i2]; i2++) {
	// If last iteration
	if (i2 == parts.length - 1) {
	obj[name] = input.value;
	} else {
	if (obj[name] === undefined) { obj[name] = {}; }
	obj = obj[name];
	}
	}
	} else {
	json_var[parts[0]] = input.value;
	}
	}

	console.info(json_var);
	</script>
	</body>
	</html>