<!DOCTYPE html>
<html>
<head>
<title>表单序列化</title>
<script type="text/javascript" src="EventUtil.js"></script>
</head>
<body>
<form method="post" action="javascript:alert('Form submitted!')" id="myForm">
<ul>
<li><input type="radio" name="color" value="red">Red</li>
<li><input type="radio" name="color" value="green">Green</li>
<li><input type="radio" name="color" value="blue">Blue</li>
</ul>
<fieldset>
<legend>Locations</legend>
<div>
<label for="selLocation">Where do you want to live?</label>
<select name="location" id="selLocation">
<option value="Sunnyvale, CA">Sunnyvale</option>
<option value="Los Angeles, CA">Los Angeles</option>
<option value="Mountain View, CA">Mountain View</option>
<option value="">China</option>
<option>Australia</option>
</select>
</div>
<div>
<label for="selLocation2">Where do you want to work?</label>
<select name="location2" id="selLocation2" multiple size="5">
<option value="Sunnyvale, CA">Sunnyvale</option>
<option value="Los Angeles, CA">Los Angeles</option>
<option value="Mountain View, CA">Mountain View</option>
<option value="">China</option>
<option>Australia</option>
</select>
</div>
</fieldset>
<div>
<label for="comments">Any other comments?</label><br>
<textarea rows="10" cols="50" id="comments" name="comments"></textarea>
</div>
<input type="button" value="Serialize Form" id="serialize-btn">
</form>
<script type="text/javascript">
function serialize(form){
var parts = [],
field = null,
i,
len,
j,
optLen,
option,
optValue;
for (i=0, len=form.elements.length; i < len; i++){
field = form.elements[i];
switch(field.type){
case "select-one":
case "select-multiple":
if (field.name.length){
for (j=0, optLen = field.options.length; j < optLen; j++){
option = field.options[j];
if (option.selected){
optValue = "";
if (option.hasAttribute){
optValue = (option.hasAttribute("value") ? option.value : option.text);
} else {
optValue = (option.attributes["value"].specified ? option.value : option.text);
}
parts.push(encodeURIComponent(field.name) + "=" + encodeURIComponent(optValue));
}
}
}
break;
case undefined: //fieldset
case "file": //file input
case "submit": //submit button
case "reset": //reset button
case "button": //custom button
break;
case "radio": //radio button
case "checkbox": //checkbox
if (!field.checked){
break;
}
/* falls through */
default:
//don't include form fields without names
if (field.name.length){
parts.push(encodeURIComponent(field.name) + "=" + encodeURIComponent(field.value));
}
}
}
return parts.join("&");
}
var btn = document.getElementById("serialize-btn");
EventUtil.addHandler(btn, "click", function(event){
var form = document.forms[0];
alert(serialize(form));
});
</script>
</body>
</html>
