基于Jquery与WebMethod投票功能实现代码

(function ($) {
$.fn.Rate = function (options) {
options = options || {};
var StarTip = options.StarTip || ['不值一看', '平平无奇', '信息靠谱', '对我很有帮助', '极品信息'];
var ItemAmount = options.ItemAmount || 5;
var UnRateClassName = options.UnRateClassName || 'star';
var RateClassName = options.RateClassName || 'star_on';
var originalStateClassName = options.originalStateClassName || 'OriginalState';
var PostURL = options.PostURL || '';
var DoAfterPost = options.DoAfterPost || function () { };
var userID = options.userID || '';
var messageID = options.messageID || '';
var content = $(this);
var starList = '';
for (var i = 0; i < ItemAmount; i++) {
starList += ['<a href="#" class="', UnRateClassName, '" title="', StarTip[i], '"></a>'].join('');
}
content.empty().append(starList).find('a').hover(function () {
$(this).prevAll().add($(this)).addClass(RateClassName);
}, function () {
$(this).prevAll().add($(this)).removeClass(RateClassName);
}).one('click', function () {
var score = parseInt(content.children().index($(this))) + 1;
$.ajax({
type: "POST",
url: PostURL,
data: "{messageID:" + messageID + ",userID:" + userID + ",Score:" + score + "}",
contentType: "application/json; charset=utf-8",
dataType: "json",
success: function (msg) {
var result = (jQuery.parseJSON(msg.d)).SuccessFlag;
DoAfterPost(result);
content.empty().removeClass();
$('<span></span>').addClass(originalStateClassName).prependTo(content).animate({ 'width': 16 * result + 'px', 'opacity': 1 }, 'slow');
}
});
});

};

})(jQuery);

$('#left table tr:eq(1) td:eq(0) #StarRate').Rate({
PostURL: 'http://www.cnblogs.com/ServiceProvider/MessageInfoService.asmx/VoteMessage',
userID: UserID,
messageID: messageID,
DoAfterPost: function (data) {
if (data > 0) {
$(voteResultContext).html(data);
}
else {
ProcessNoticeShow('您已经投过票了');
}
}
});
}

.star{ height:16px; width:16px;float:left; background:url(../images/star.gif) no-repeat 0 0;}
.star_on{ background: url(../images/star.gif) no-repeat 0 -32px !important;}
.OriginalState{ width:0px;background: url(../images/star.gif) repeat-x 0 -16px !important;opacity:0;height:16px; display:block;}

/// <summary>
/// 对信息进行投票，返回值大于0代表成功
/// </summary>
/// <param name="messageID">信息ID</param>
/// <param name="userID">用户ID</param>
/// <param name="Score">得分</param>
/// <returns></returns>
[WebMethod]
public string VoteMessage(int messageID, int userID ,int Score)
{
SQLCMD = new SqlCommand("MessageInfo_Add_VoteUsefull_MessageIDUserID", SQLConnect);
SQLCMD.CommandType = CommandType.StoredProcedure;
SQLCMD.Parameters.Add(new SqlParameter("@messageID",SqlDbType.Int));
SQLCMD.Parameters["@messageID"].Value = messageID;
SQLCMD.Parameters.Add(new SqlParameter("@userID",SqlDbType.Int));
SQLCMD.Parameters["@userID"].Value = userID;
SQLCMD.Parameters.Add(new SqlParameter("@Score", SqlDbType.Int));
SQLCMD.Parameters["@Score"].Value = Score;
float SuccessFlag = basicSQLAccess.ExeScalarReturnValueFloat(SQLCMD);
Hashtable HTFlag = new Hashtable();
HTFlag.Add("SuccessFlag", SuccessFlag);
return JsonConvert.SerializeObject(HTFlag);
}