$.getJSON( )的使用方法简介
$.getJSON( url [, data ] [, success(data, textStatus, jqXHR) ] )
url是必选参数，表示json数据的地址；
data是可选参数，用于请求数据时发送数据参数；
success是可参数，这是一个回调函数，用于处理请求到的数据。
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//内容页面 <br> <div id="notice_div"></div><br> //分页控件
<div id=
"notice_pages"
></div>
<script>
var
roolurl =
"http://"
+ window.location.host;
var
urlAshx = roolurl +
"/aa/Ashx/NoticeInfo.ashx"
;
//var pages = 0;
//获取分页好的公告内容
function
GetNoticeList(curr, cid) {
$.getJSON(urlAshx,
{
//参数
action:
"notice_action"
,
courseid: cid,
page: curr || 1,
//向服务端传的参数，此处只是演示
nums: 3
//每页显示的条数
},
function
(datajson) {
//成功执行的方法<br> if (datajson != null && typeof (datajson) == "string" && datajson.length > 0) { <br> try { datajson = JSON.parse(datajson); } catch (e) { datajson = eval("(" + datajson + ")"); } }
var
norice_content =
""
;
//alert(datajson.pages);
$(datajson.rows).each(
function
(n, Row) {
norice_content +=
" <div class='panel panel-default'>"
;
norice_content +=
" <div class='panel-heading'>"
;
norice_content +=
" <h3 class='panel-title'>"
;
norice_content += Row.CreateDate;
norice_content +=
" "
;
norice_content += Row.Creater;
norice_content +=
" </h3>"
;
norice_content +=
" </div>"
;
norice_content +=
" <div class='panel-body'>"
;
norice_content += Row.NoticeContent;
norice_content +=
" </div>"
;
norice_content +=
" </div>"
;
});
$(
'#notice_div'
).html(norice_content);
//alert(11);
//调用分页
laypage({
cont:
'notice_pages'
,
//容器。值支持id名、原生dom对象，jquery对象。【如该容器为】：<div id="page1"></div>
pages: datajson.pages,
//总页数
groups: 5,
//连续显示分页数
skip:
false
,
//是否开启跳页
skin:
'#AF0000'
,
curr: curr || 1,
//当前页,
jump:
function
(obj, first) {
//触发分页后的回调
if
(!first) {
//点击跳页触发函数自身，并传递当前页：obj.curr
GetNoticeList(obj.curr, cid);
}
}
});
});
}
$(document).ready(
function
() {
GetNoticeList(0,
'<%=_courseid%>'
)
});
</script>
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后台数据反馈
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private
string
GetNewsByPage(HttpContext context)
{
#region //分页 算法
int
page = 0;
int
.TryParse(context.Request.Params[
"page"
],
out
page);
//当前第几页
int
nums = 0;
int
.TryParse(context.Request.Params[
"nums"
],
out
nums);
//每页显示几条数据
int
StartIndex = (page - 1) * nums + 1;
int
EndIndex = page * nums;
#endregion
//StringBuilder strWhere = new StringBuilder();
#region // 拼Sql Where 条件
#endregion
int
total = 0;
DataTable dt = bll_News.GetListByPage(
""
,
"postdate"
, StartIndex, EndIndex);
total = bll_News.GetRecordCount(
""
);
string
strjosn = AppCode.DataTableConvertJson.DataTableToJson(dt);
int
pages = Convert.ToInt32(Math.Ceiling((
double
)total / (
double
)nums));
// 页数
return
"{\"total\":"
+ total +
",\"pages\":"
+ pages +
",\"rows\":"
+ strjosn +
"}"
;
}
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