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| <!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title></title>
<style type="text/css">
.pagination{vertical-align:middle;}
.pagination a,.pagination span{padding:0 5px;margin-right:5px;border: 1px solid
.pagination .pageem{line-height:32px;display:inline-block;vertical-align:middle;font-style:normal;color:
.pagination .pageem1{margin-left:2em;margin-right:4px;}
.pagination .pageem2{margin-left:5px;}
.pagination a {text-decoration: none;}
.pagination a:hover,.pagination a:active {border-color:
.pagination .pagefirst,.pagination .pageprev,.pagination .pagelast,.pagination .pagenext{font-size:12px;}
.pagination .pageprev{margin-right:2em;}
.pagination .pagenext{margin-left:2em;}
.pagination .current {border-color:
.pagination .disabled {border: 1px solid
.pagination .pagepoints{border-color:transparent;}
.pagination .pageselect{box-sizing:border-box;height:30px;vertical-align:middle;}
</style>
</head>
<body>
<div id="a"></div>
<script>
/*
* -- getPagination --
* return: pagesHtml stringObject
* params:
* totalItems: [number] 总条数 (必选)
* opts : {...} 配置项对象(可选)
* |----- currentPage: [number] [default:1] //当前页
* |----- pageSize: [number] [default:10] //每页条数
* |----- adjacents: [number] [default:2] //折叠的前后的展示个数
* |----- ifNoLink: [boolean] [default:false] //是否禁用链接
* |----- ifShowSelect: [boolean] [default:false] //是否显示下拉列表
* |----- ifShowPrevNext: [boolean] [default:true] //是否显示上一页、下一页按钮
* |----- ifShowFirstLast: [boolean] [default:true] //是否显示首页、尾页按钮
* |----- ellipsis: [string] [default:'...'] //有折叠时，折叠的文字
* |----- targetPageUrlPart: [string] [default:'?foo=bar'] //分页链接的前半部分
* |----- wordPrev: [string] [default:'< 上一页'] //上一页按钮的文字
* |----- wordNext: [string] [default:'下一页 >'] //下一页按钮的文字
* |----- wordFirst: [string] [default:'|<< 首 页'] //首页按钮的文字
* |----- wordLast: [string] [default:'末 页 >>|'] //尾页按钮的文字
* |----- whenLteOnePageIfReturnEmpty: [boolean] [default:false] //当小于等于1页时，是否返回空（否则返回分页html）
* use:
* var pageHtml= getPagination(563);
* var pageHtml= getPagination(563,{ currentPage:12 });
* var pageHtml= getPagination(563,{ currentPage:12, wordPrev:'上一页' });
* ele.innerHTML= pageHtml;
* console.log(pageHtml.totalPage);
* console.log(pageHtml.selectHtml);
*
*/
function getPagination(totalItems,opts){
function href(page){ return def.ifNoLink?'javascript:;':def.targetPageUrlPart+'&page='+page; }
if(isNaN(totalItems)) return '';
totalItems=Math.abs(+totalItems);
var def={
currentPage:1,
pageSize:10,
adjacents:2,
ifNoLink:false,
whenLteOnePageIfReturnEmpty:false,
ifShowSelect:false,
ifShowPrevNext:true,
ifShowFirstLast:true,
ellipsis:'...',
targetPageUrlPart:'?foo=bar',
wordPrev:'< 上一页',
wordNext:'下一页 >',
wordFirst:'|<< 首 页',
wordLast: '末 页 >>|'
};
if(opts){ for(var i in opts) def[i]=opts[i]; }
var prev= def.currentPage - 1,
next = def.currentPage + 1,
lastpage = Math.ceil(totalItems/def.pageSize),
lpm1 = lastpage - 1,
pagination = '',
selects,
counter,
pts='<span class="pagepoints">'+def.ellipsis+'</span>';
selects='<em class="pageem pageem1">跳到第</em><select class="pageselect" onchange="location.href=\''+def.targetPageUrlPart+'&page=\'+this.value;">';
for(counter =1; counter<=lastpage; counter++) selects += '<option value="'+counter+'" '+(counter === def.currentPage?' selected':'')+'>'+counter+'</span>';
selects += '</select><em class="pageem pageem2">页</em>';
lastpage<1 && (selects='', lastpage=1);
if(lastpage > 1){
pagination += '<div class="pagination">';
//first and previous button
if(def.currentPage >1 ) {
def.ifShowFirstLast && (pagination += '<a class="pagefirst" data-page="1" href="'+href(1)+'">'+def.wordFirst+'</a>'),
def.ifShowPrevNext && (pagination += '<a class="pageprev" data-page="'+prev+'" href="'+href(prev)+'">'+def.wordPrev+'</a>');
}else{
def.ifShowFirstLast && (pagination += '<span class="pagefirst disabled">'+def.wordFirst+'</span>'),
def.ifShowPrevNext && (pagination += '<span class="pageprev disabled">'+def.wordPrev+'</span>');
}
//pages
if(lastpage < 7 + (def.adjacents * 2)) {
for (counter = 1; counter <= lastpage; counter++) {
if (counter === def.currentPage) pagination += '<span class="current">' + counter + '</span>';
else pagination += '<a data-page="'+counter+'" href="' +href(counter)+ '">' + counter + '</a>';
}
//enough pages to hide some
}else if(lastpage >= 7 + (def.adjacents * 2)){
//close to beginning only hide later pages
if(def.currentPage < 1 + (def.adjacents * 3)){
for(counter =1 ; counter<=(4 + (def.adjacents * 2))-1; counter++){
if(counter === def.currentPage) pagination += '<span class="current">'+counter+'</span>';
else pagination += '<a data-page="'+counter+'" href="'+href(counter)+'">'+counter+'</a>';
}
pagination += pts,
pagination += '<a data-page="'+lpm1+'" href="'+href(lpm1)+'">'+lpm1+'</a>',
pagination += '<a data-page="'+lastpage+'" href="'+href(lastpage)+'">'+lastpage+'</a>';
//in middle hide some front and some back
}else if(lastpage - (def.adjacents * 2) > def.currentPage && def.currentPage > (def.adjacents * 2)){
pagination += '<a data-page="1" href="'+href(1)+'">1</a>',
pagination += '<a data-page="2" href="'+href(2)+'">2</a>',
pagination += pts;
for(counter =def.currentPage - def.adjacents;counter<=def.currentPage + def.adjacents;counter++){
if(counter===def.currentPage) pagination += '<span class="current">'+counter+'</span>';
else pagination += '<a data-page="'+counter+'" href="'+href(counter)+'">'+counter+'</a>';
}
pagination += pts,
pagination += '<a data-page="'+lpm1+'" href="'+href(lpm1)+'">'+lpm1+'</a>',
pagination += '<a data-page="'+lastpage+'" href="'+href(lastpage)+'">'+lastpage+'</a>';
//close to end only hide early pages
}else{
pagination += '<a data-page="1" href="'+href(1)+'">1</a>',
pagination += '<a data-page="2" href="'+href(2)+'">2</a>',
pagination += pts;
for(counter = (lastpage - (1 + (def.adjacents * 3))); counter<=lastpage; counter++){
if(counter === def.currentPage) pagination += '<span class="current">'+counter+'</span>';
else pagination += '<a data-page="'+counter+'" href="'+href(counter)+'">'+counter+'</a>';
}
}
}
//last and next button
if(def.currentPage < lastpage){
def.ifShowPrevNext && (pagination += '<a class="pagenext" data-page="'+next+'" href="'+href(next)+'">'+def.wordNext+'</a>');
def.ifShowFirstLast && (pagination += '<a class="pagelast" data-page="'+lastpage+'" href="'+href(lastpage)+'">'+def.wordLast+'</a>');
}else{
def.ifShowPrevNext && (pagination += '<span class="pagenext disabled">'+def.wordNext+'</span>');
def.ifShowFirstLast && (pagination += '<span class="pagelast disabled">'+def.wordLast+'</span>');
}
def.ifShowSelect && (pagination += selects);
pagination += '</div>';
}
else if(lastpage===1){
if (!def.whenLteOnePageIfReturnEmpty) {
pagination += '<div class="pagination">';
def.ifShowFirstLast && (pagination += '<span class="pagefirst disabled">' + def.wordFirst + '</span>');
def.ifShowPrevNext && (pagination += '<span class="pageprev disabled">' + def.wordPrev + '</span>');
pagination += '<span class="current">1</span>';
def.ifShowPrevNext && (pagination += '<span class="pagenext disabled">' + def.wordNext + '</span>');
def.ifShowFirstLast && (pagination += '<span class="pagelast disabled">' + def.wordLast + '</span>');
pagination += '</div>';
}
}
var ret=new String(pagination);
ret.totalPage=lastpage;
ret.selectHtml=selects;
ret.currentPage=def.currentPage;
ret.pageSize=def.pageSize;
ret.totalItems=totalItems;
return ret;
}
var pages=getPagination(20,{currentPage:1,ifShowSelect:true});
//console.log(''+pages);
//console.log(pages.totalPage);
//console.log(pages.selectHtml);
document.getElementById('a').innerHTML=pages;
</script>
</body>
</html>
|