1 function serialize(form) {
2 var parts = new Array();
3 var field = null;
4
5 for (var i = 0, len = form.elements.length; i < len; i++) {
6 field = form.elements[i];
7
8 switch (field.type) {
9 case "select-one":
10 case "select-multiple":
11 for (var j = 0, optLen = field.options.length; j < optLen; j++) {
12 var option = field.options[j];
13 if (option.selected) {
14 var optValue = "";
15 if (option.hasAttribute) {
16 optValue = (option.hasAttribute("value") ? option.value : option.text);
17 } else {
18 optValue = (option.attributes["value"].specified ? option.value : option.text);
19 }
20 parts.push(encodeURIComponent(field.name) + "=" + encodeURIComponent(optValue));
21 }
22 }
23 break;
24 case undefined:
25 case "file":
26 case "submit":
27 case "reset":
28 case "button":
29 break;
30 case "radio":
31 case "checkbox":
32 if (!field.checked) {
33 break;
34 }
35 default:
36 parts.push(encodeURIComponent(field.name) + "=" + encodeURIComponent(optValue));
37 }
38 }
39 return parts.join("&");
40 }
