您可以使用 json.js 库(来源:https://github.com/douglascrockford/JSON-js)
<script src="//cdnjs.cloudflare.com/ajax/libs/json2/20121008/json2.js"></script>
<form>
<label for="first_name">your First Name: </label>
<input id="first_name" name="first_name" type="text" />
<label for="last_name">your Last Name: </label>
<input id="last_name" name="last_name" type="text" />
<input name="myBtn" id="myBtn" type="button" value="Submit Data" />
</form>
<script>
$('#myBtn').click(function() {
var form_data = {
'first_name': $('#first_name').val(),
'last_name': $('#last_name').val()
};
var json_text = JSON.stringify(form_data, null, 2);
$('#myBtn').after('<pre>' + json_text + '</pre>');
});
</script>
现场查看:http: //jsfiddle.net/jcalonso/HDWjf/