jquery 巧用json传参

JavaScript代码，巧用JSON传参数
function AddComment(content) {
var comment = {};
comment.threadId = $("#span_thread_id").html();
comment.groupId = $("#span_group_id").html();
comment.groupType = $("#span_group_type").html();
comment.title = $("#thread_title").html();
comment.content = content;
$.ajax({
url: '/WebService/GroupService.asmx/AddThreadComment',
data: $.toJSON(comment),
type: 'post',
dataType: 'json',
contentType: 'application/json;charset=utf-8',
cache: false,
success: function(data) {
//根据返回值data.d处理
},
error: function(xhr) {
//中间发生异常，具体查看xhr.responseText
}
});
}