效果：
js：
$.fn.extend({ JPager: function (cfg, pageIndex, pageSize) {
if (cfg && pageIndex > 0 && pageSize>0) {
var token = “#” + this.attr(“id”);
this.empty();
var pageFirst = function () {
$(token).JPager(cfg, 1, pageSize);
};
var pagePre = function () {
$(token).JPager(cfg, pageIndex – 1, pageSize);
};
var pageLast = function () {
$(token).JPager(cfg, parseInt($(“#_tot”).val()), pageSize);
};
var pageNext = function () {
$(token).JPager(cfg, pageIndex + 1, pageSize);
};
var pageNumber = function () {
$(token).JPager(cfg, parseInt($(this).text()), pageSize);
};
var pageGo = function () {
var index = parseInt($(“#_pos”).val());
var total = parseInt($(“#_tot”).val());
if (index) {
if (index > total) {
$(token).JPager(cfg, total, pageSize);
}
else if (index < 1) {
$(token).JPager(cfg, 1, pageSize);
}
else {
$(token).JPager(cfg, index, pageSize);
}
}
};
var checkGoNumber = function () {
if (!Number(this.value)) {
this.value = “”;
}
else {
this.value = Number(this.value);
}
};
var initCustomer = function (recordCount) {
if (cfg.customer) {
if (cfg.customer.template) {
var t = cfg.customer.template;
t = t.replace(/%total%/gi, Math.ceil(recordCount / pageSize)).replace(/%current%/gi, pageIndex).replace(/%recordCount%/gi, recordCount).replace(/%pageSize%/gi, pageSize);
if (cfg.customer.position == “right”) {
$(“#_right”).after(t);
}
else {
$(“#_left”).before(t);
}
}
}
};
var changeState = function (total) {
if (pageIndex == 1) {
$(“#_first”).attr(“class”, “unable”);
$(“#_pre”).attr(“class”, “unable”);
}
else {
$(“#_first”).bind(“click”, pageFirst).attr(“class”, “number”);
$(“#_pre”).bind(“click”, pagePre).attr(“class”, “number”);
}
if (pageIndex == total) {
$(“#_last”).attr(“class”, “unable”);
$(“#_next”).attr(“class”, “unable”);
}
else {
$(“#_last”).bind(“click”, pageLast).attr(“class”, “number”);
$(“#_next”).bind(“click”, pageNext).attr(“class”, “number”);
}
};
var initNumber = function (total, count, current) {
if (total > 0 && count > 0) {
if (current < 1) {
current = 1;
}
if (current > total) {
current = total;
}
var endIndex = total;
