stikjs/stik-dom

(function( stik ){
  stik.dom( "serialize", function(){
    return function serializeForm( form, asObj ){
      var i, j, q;
      if (!form || form.nodeName !== "FORM") {
        return;
      }
      i = j = void 0;
      q = [];
      i = form.elements.length - 1;
      while (i >= 0) {
        if (form.elements[i].name === "") {
          i = i - 1;
          continue;
        }
        switch (form.elements[i].nodeName) {
          case "INPUT":
            switch (form.elements[i].type) {
              case "text":
              case "hidden":
              case "password":
              case "button":
              case "reset":
              case "submit":
                q.push(form.elements[i].name + "=" + encodeURIComponent(form.elements[i].value));
                break;
              case "checkbox":
              case "radio":
                if (form.elements[i].checked) {
                  q.push(form.elements[i].name + "=" + encodeURIComponent(form.elements[i].value));
                }
                break;
              case "file":
                break;
            }
            break;
          case "TEXTAREA":
            q.push(form.elements[i].name + "=" + encodeURIComponent(form.elements[i].value));
            break;
          case "SELECT":
            switch (form.elements[i].type) {
              case "select-one":
                q.push(form.elements[i].name + "=" + encodeURIComponent(form.elements[i].value));
                break;
              case "select-multiple":
                j = form.elements[i].options.length - 1;
                while (j >= 0) {
                  if (form.elements[i].options[j].selected) {
                    q.push(form.elements[i].name + "=" + encodeURIComponent(form.elements[i].options[j].value));
                  }
                  j = j - 1;
                }
            }
            break;
          case "BUTTON":
            switch (form.elements[i].type) {
              case "reset":
              case "submit":
              case "button":
                q.push(form.elements[i].name + "=" + encodeURIComponent(form.elements[i].value));
            }
        }
        i = i - 1;
      }
      if ( asObj ) {
        var obj = {}, name, value;

        for (var i = 0; i < q.length; i++) {
          name = q[i].split("=")[0];
          value = q[i].split("=")[1];
          obj[name] = value;
        }

        return obj;
      } else {
        return q.join( "&" );
      }
    };
  });
})( window.stik );