怎么把下面的jquery封装到一个JS文件中，用的时候可以调用

基于jquery封装的一个js分页代码：

(function ($) {
var PageFunc = function PageFunc() { }
$.PageFunc = function (Total, PageSize, curPageNum, FunUrl) {
if (PageSize == "" || PageSize == null || PageSize == undefined) {
PageSize = 10;
}
if (curPageNum == "" || curPageNum == null || curPageNum == undefined) {
curPageNum = 1;
}
//计算总页数
Total = parseInt(Total); //总记录数
PageSize = parseInt(PageSize); //每页显示数
curPageNum = parseInt(curPageNum); //当前页
//总页数
var AllPage = Math.floor(Total / PageSize);
if (Total % PageSize != 0) {
AllPage++;
}
var navHtml = "";
if (curPageNum <= 0)
curPageNum = 1;
if (AllPage > 1) {
if (curPageNum != 1) {
//处理首页连接
navHtml += "|< ";
}
if (curPageNum > 1) {
//处理上一页的连接
navHtml += "<< ";
}
else {
navHtml += "<< ";
}
var currint = 5;
for (var i = 0; i <= 10; i++) {
//一共最多显示10个页码，前面5个，后面5个
if ((curPageNum + i - currint) >= 1 && (curPageNum + i - currint) <= AllPage)
if (currint == i) {
//当前页处理
navHtml += "[" + curPageNum + "] ";
}
else {
//一般页处理
var n = curPageNum + i - currint;
navHtml += "" + n + " ";
}
}
if (curPageNum < AllPage) {
//处理下一页的链接
navHtml += ">> ";
}
else {
navHtml += ">> ";
}
if (curPageNum != AllPage) {
navHtml += ">| ";
}
}
navHtml += "[" + curPageNum + "/" + AllPage + "] ";
return navHtml;
};
})(jQuery);

下边是调用方法：

function QueryList(curpage) {
if (curpage == "" || curpage == null || curpage == undefined) {
curpage = 1;
}
var pagesize = 10;
var Countys = $("#Countys").val(); //县
var enddate = $("#enddate").val(); //结束时间
var begindate = $("#begindate").val(); //开始时间
$.ajax({
url: "",
type: "POST",
data: { "Countys": Countys, "enddate": enddate, "begindate": begindate, "curpage": curpage, "pagesize": pagesize },
dataType: "json",
error: function (xhr, status, errMsg) { window.location.href = "/CommonError/index/" + errMsg.code + "?txt=" + errMsg.msg; },
success: function (mydata) {
var str = "";
$.each(mydata.Tdata, function (i, item) {
str += ""
str += "" + $.FormatDateTime(item.ControlBeginTime, false) + "";
str += "" + $.FormatDateTime(item.ControlEndTime, false) + "";
str += "" + item.Name + "";
str += "" + item.PlateNumber + "";
str += "" + item.ControlDept + "";
if (item.IsAll == "0") {
str += "全县布控";
}
else {
str += "按卡口点布控";
}
str += "" + item.IsAll == "0" ? "全县布控" : "按卡口点布控" + "";
str += "修改";
str += "删除";
str += "详细";
str + "";
});
$("#srh_rslt tbody").html(str);
$(".pagination").html($.PageFunc(mydata.total, pagesize, curpage, "QueryList"));
}
});
}

把上面的代码去掉标签, 把其它的复制到一个JS文件中, 在需要用到这段JS的页面中引入你保存的那个JS文件就可以了, 例, 你保存为a.js 在页面中引入:

(
$.fn.myfn=function(){
/*
这里加上你的代码
以后可以用$().myfn()调用

*/

}

)(jQuery)