一个简单的jQuery分页跳转插件

两种效果图，如下：

//样式

ul {
    list-style: none;
    padding: 0;
    margin: 0;
}
.pagination{
display:inline-block;
padding-left:0;
margin:20px 0;
border-radius:4px
}
.pagination>li{display:inline}  
.pagination>li>a,.pagination>li>span{
position:relative;
float:left;
padding:6px 12px;
margin-left:-1px;
line-height:1.42857143;
color:#337ab7;
text-decoration:none;
background-color:#fff;
border:1px solid #ddd;
cursor: pointer;
-webkit-touch-callout: none;
-webkit-user-select: none;
-khtml-user-select: none;
-moz-user-select: none;
-ms-user-select: none;
user-select: none;
}
.pagination>li:first-child>a,.pagination>li:first-child>span{
margin-left:0;
border-top-left-radius:4px;
border-bottom-left-radius:4px;
}  
.pagination>li:last-child>a,.pagination>li:last-child>span{
border-top-right-radius:4px;
border-bottom-right-radius:4px;
}  
.pagination>li>a:focus,.pagination>li>a:hover,.pagination>li>span:focus,.pagination>li>span:hover{
z-index:2;
color:#23527c;
background-color:#eee;
border-color:#ddd;
}  
.pagination>.active>a,.pagination>.active>a:focus,.pagination>.active>a:hover,.pagination>.active>span,.pagination>.active>span:focus,.pagination>.active>span:hover{
z-index:3;color:#fff;
cursor:default;
background-color:#337ab7;
border-color:#337ab7;
}  
.pagination>.disabled>a,.pagination>.disabled>a:focus,.pagination>.disabled>a:hover,.pagination>.disabled>span,.pagination>.disabled>span:focus,.pagination>.disabled>span:hover{
color:#777;
cursor:not-allowed;
background-color:#fff;
border-color:#ddd;
}  
.pagination-lg>li>a,.pagination-lg>li>span{
padding:10px 16px;
font-size:18px;
line-height:1.3333333;
}  
.pagination-lg>li:first-child>a,.pagination-lg>li:first-child>span{
border-top-left-radius:6px;
border-bottom-left-radius:6px;
}  
.pagination-lg>li:last-child>a,.pagination-lg>li:last-child>span{
border-top-right-radius:6px;
border-bottom-right-radius:6px;
}  
.pagination-sm>li>a,.pagination-sm>li>span{
padding:5px 10px;
font-size:12px;
line-height:1.5;
}  
.pagination-sm>li:first-child>a,.pagination-sm>li:first-child>span{
border-top-left-radius:3px;
border-bottom-left-radius:3px;
}  
.pagination-sm>li:last-child>a,.pagination-sm>li:last-child>span{
border-top-right-radius:3px;
border-bottom-right-radius:3px;
}  
.pager{
padding-left:0;
margin:20px 0;
text-align:center;
list-style:none;
}  
.pager li{
display:inline;
}  
.pager li>a,.pager li>span{
display:inline-block;
padding:5px 14px;
background-color:#fff;
border:1px solid #ddd;
border-radius:15px;
}  
.pager li>a:focus,.pager li>a:hover{
text-decoration:none;
background-color:#eee;
}  
.pager .next>a,.pager .next>span{
float:right;
}  
.pager .previous>a,.pager .previous>span{
float:left;
}  
.pager .disabled>a,.pager .disabled>a:focus,.pager .disabled>a:hover,.pager .disabled>span{
color:#777;
cursor:not-allowed;
background-color:#fff;
}
.pageJump{
display:inline-block;
padding-left:0;
margin:20px 10px;
border-radius:4px;
vertical-align:top;
}
.pageJump .button,.pageJump input{
font-size:16px;
padding:6px 12px;
margin-left:-1px;
line-height:1.42857143;
color:#337ab7;
text-decoration:none;
background-color:#fff;
border:1px solid #ddd
}
.pageJump input{
width:20px;
}
.pageJump-lg .button,.pageJump-lg input{
padding:10px 16px;
font-size:18px;
line-height:1.3333333;
}
.pageJump-sm .button,.pageJump-sm input{
padding:5px 10px;
font-size:12px;
line-height:1.5;
}

//html代码  
    <div>
<ul class="pagination" id="page1">
 </ul>
<div class="pageJump">
<span>跳转到</span>
<input type="text"/>
<span>页</span>
<button type="button" class="button">确定</button>
</div>

    </div>

    <div>
    <ul class="pagination" id="page2">
    </ul>
    <div class="pageJump">
    <span>跳转到</span>
    <input type="text"/>
    <span>页</span>
    <button type="button" class="button">确定</button>
    </div>
    </div>

//js代码

<script>

function Page(opt){
var set = $.extend({num:null,startnum:1,elem:null,callback:null},opt||{});
if(set.startnum>set.num||set.startnum<1){
set.startnum = 1;
}
var n = 0,htm = '';
var clickpages = {
elem:set.elem,
num:set.num,
callback:set.callback,
init:function(){
this.elem.next('div.pageJump').children('.button').unbind('click')
this.JumpPages();
this.elem.children('li').click(function () {
var txt = $(this).children('a').text();
var page = '', ele = null;
var page1 = parseInt(clickpages.elem.children('li.active').attr('page'));
if (isNaN(parseInt(txt))) {
switch (txt) {
case '下一页':
if (page1 == clickpages.num) {
return;
}
if (page1 >= (clickpages.num - 2) || clickpages.num <= 6 || page1 < 3) {
ele = clickpages.elem.children('li.active').next();
} else {
clickpages.newPages('next', page1 + 1);
ele = clickpages.elem.children('li.active');
}
break;
case '上一页':
if (page1 == '1') {
return;
}
if (page1 >= (clickpages.num - 1) || page1 <= 3 || clickpages.num <= 6) {
ele = clickpages.elem.children('li.active').prev();
} else {
clickpages.newPages('prev', page1 - 1);
ele = clickpages.elem.children('li.active');
}
break;
case '«':
if (page1 == '1') {
return;
}
if (clickpages.num > 6) {
clickpages.newPages('«', 1);
}
ele = clickpages.elem.children('li[page=1]');
break;
case '»':
if (page1 == clickpages.num) {
return;
}
if (clickpages.num > 6) {
clickpages.newPages('»', clickpages.num);
}
ele = clickpages.elem.children('li[page=' + clickpages.num + ']');
break;
case '...':
return;
}
} else {
if ((parseInt(txt) >= (clickpages.num - 3) || parseInt(txt) <= 3) && clickpages.num > 6) {
clickpages.newPages('jump', parseInt(txt));
}
ele = $(this);
}
page = clickpages.actPages(ele);
if (page != '' && page != page1) {
if (clickpages.callback){
clickpages.callback(parseInt(page));
}
}
});
},
//active
actPages:function (ele) {
ele.addClass('active').siblings().removeClass('active');
return clickpages.elem.children('li.active').text();
},
JumpPages:function () {
this.elem.next('div.pageJump').children('.button').click(function(){
var i = parseInt($(this).siblings('input').val());
if(isNaN(i)||(i<=0)||i>clickpages.num){
return;
}else if(clickpages.num>6){
clickpages.newPages('jump',i);
}else{
var ele = clickpages.elem.children('li[page='+i+']');
clickpages.actPages(ele);
if (clickpages.callback){
clickpages.callback(i);
}
return;
}

if (clickpages.callback){
clickpages.callback(i);
}
})
},


//newpages
newPages:function (type, i) {
var html = "",htmlLeft="",htmlRight="",htmlC="";
var HL = '<li><a>...</a></li>';
html = '<li><a  aria-label="Previous">&laquo;</a></li>\
<li><a>上一页</a></li>'
for (var n = 0;n<3;n++){
htmlC += '<li '+((n-1)==0?'class="active"':'')+' page="'+(i+n-1)+'"><a>'+(i+n-1)+'</a></li>';
htmlLeft += '<li '+((n+2)==i?'class="active"':'')+' page="'+(n+2)+'"><a>'+(n+2)+'</a></li>';
htmlRight += '<li '+((set.num+n-3)==i?'class="active"':'')+' page="'+(set.num+n-3)+'"><a>'+(set.num+n-3)+'</a></li>';
}

switch (type) {
case "next":
if(i<=4){
html+='<li page="1"><a>1</a></li>'+htmlLeft+HL+'<li page="'+set.num+'"><a>'+set.num+'</a></li>';
}else if(i>=(set.num-3)){
html+='<li page="1"><a>1</a></li>'+HL+htmlRight+'<li page="'+set.num+'"><a>'+set.num+'</a></li>';
}else{
html += '<li page="1"><a>1</a></li>'+HL+htmlC+HL+'<li page="'+set.num+'"><a>'+set.num+'</a></li>';
}
break;
case "prev":
if(i<=4){
html+='<li page="1"><a>1</a></li>'+htmlLeft+HL+'<li page="'+set.num+'"><a>'+set.num+'</a></li>';
}else if(i>=(set.num-3)){
html+='<li page="1"><a>1</a></li>'+HL+htmlRight+'<li page="'+set.num+'"><a>'+set.num+'</a></li>';
}else{
html += '<li page="1"><a>1</a></li>'+HL+htmlC+HL+'<li page="'+set.num+'"><a>'+set.num+'</a></li>';
}
break;
case "«" :
html+='<li class="active" page="1"><a>1</a></li>'+htmlLeft+HL+'<li page="'+set.num+'"><a>'+set.num+'</a></li>';
break;
case "»" :
html+='<li page="1"><a>1</a></li>'+HL+htmlRight+'<li class="active" page="'+set.num+'"><a>'+set.num+'</a></li>';
break;
case "jump" :
if(i<=4){
if(i==1){
html+='<li class="active" page="1"><a>1</a></li>'+htmlLeft+HL+'<li page="'+set.num+'"><a>'+set.num+'</a></li>';
}else{
html+='<li page="1"><a>1</a></li>'+htmlLeft+HL+'<li page="'+set.num+'"><a>'+set.num+'</a></li>';
}
}else if((i>=set.num-3)&&(set.num>=7)){
if(i==set.num){
html+='<li page="1"><a>1</a></li>'+HL+htmlRight+'<li class="active" page="'+set.num+'"><a>'+set.num+'</a></li>';
}else{
html+='<li page="1"><a>1</a></li>'+HL+htmlRight+'<li page="'+set.num+'"><a>'+set.num+'</a></li>';
}
}else{
html += '<li page="1"><a>1</a></li>'+HL+htmlC+HL+'<li page="'+set.num+'"><a>'+set.num+'</a></li>';
}
}
html += '<li><a>下一页</a></li>\
<li><a  aria-label="Next">&raquo;</a></li>';
if (this.num > 5 || this.num < 3) {
set.elem.html(html);
clickpages.init({num:set.num,elem:set.elem,callback:set.callback});
}
}
}
if(set.num<=1){
$(".pagination").html('');
return;
}else if(parseInt(set.num)<=6){
n = parseInt(set.num);
var html='<li><a  aria-label="Previous">&laquo;</a></li>\
<li><a>上一页</a></li>';
for(var i=1;i<=n;i++){
if(i==set.startnum){
html+='<li class="active" page="'+i+'"><a>'+i+'</a></li>';
}else{
html+='<li page="'+i+'"><a>'+i+'</a></li>';
}
}
html +='<li><a>下一页</a></li>\
<li><a  aria-label="Next">&raquo;</a></li>';
set.elem.html(html);
clickpages.init();
}else{
clickpages.newPages("jump",set.startnum)
}
}

</script>

<script>
Page({
num:6, //页码数
startnum:3, //指定页码
elem:$('#page1'), //指定的元素
callback:function(n){ //回调函数
console.log(n);
}
});
Page({
num:7, //页码数
startnum:6, //指定页码
elem:$('#page2'), //指定的元素
callback:function(n){ //回调函数
console.log(n);
}
});
</script>