心扬JS分页函数代码_javascript技巧



代码如下:









//pageSize,每页显示多少条记录,currentPage当前页,recordCount共有多少条记录,url页面路径，必须带有page参数,numCount，每页显示多少个分页数字
var CreatePager=function(pageSize,currentPage,recordCount,url,numCount){
//创建一个链接
var CreateHref=function(url,page,p_ele,t,currentPage){
var a=document.createElement('a');
var reg=new RegExp("page=\\d+");
url=url.replace(reg.exec(url),'page='+page)
a.setAttribute('href',url);
a.setAttribute('class',currentPage==page?'current':'not-current');
var t=document.createTextNode(t);
a.appendChild(t);
document.getElementById(p_ele).appendChild(a);
}
//计算属于哪个区间
var GetNumArea=function(num,numCount,pageCount){
var currentArea=parseInt((num-1)/numCount)+1;
var lastArea=parseInt((pageCount-1)/numCount)+1;
this.minNum=(currentArea-1)*numCount+1;
var tempTaxNumber=currentArea*numCount+1;
this.maxNum=tempTaxNumber>pageCount?pageCount:tempTaxNumber;
this.preAreaNum=currentArea<=1?1:this.minNum-1;
this.afterAreaNum=currentArea>=lastArea?pageCount:this.maxNum+1;
}
var pageCount=0;//总页数
pageCount=recordCount%pageSize===0?recordCount/pageSize:parseInt(recordCount/pageSize)+1;//总页数
// var pager=document.getElementById('pager');//获取分页的元素
// var pageSummary=document.createElement('span');//创建一个DIV，在里面显示第几页共几页
// var summaryContent=document.createTextNode('第'+currentPage+'页共'+pageCount+'页');
// pageSummary.appendChild(summaryContent);
// pager.appendChild(pageSummary);
CreateHref(url,1,'pager','首页',currentPage);//添加首页链接
CreateHref(url,new GetNumArea(currentPage,numCount,pageCount).preAreaNum,'pager','<<',currentPage);//添加前面的省略号
//显示分页数字 开始
var pageArea = pageCount / numCount;// 页码区间
if(pageCountfor(i=1;i<=pageCount;i++){
CreateHref(url,i,'pager',i,currentPage);
}
}else{
currentPage=currentPage>=pageCount?pageCount:currentPage;
var minNum=new GetNumArea(currentPage,numCount,pageCount).minNum;
var maxNum=new GetNumArea(currentPage,numCount,pageCount).maxNum;
for(i=minNum;iCreateHref(url,i,'pager',i,currentPage);
}
}
//显示分页数字 结束
CreateHref(url,new GetNumArea(currentPage,numCount,pageCount).afterAreaNum,'pager','>>',currentPage);//显示分页后面的省略号
CreateHref(url,pageCount,'pager','末页',currentPage);//添加末页链
}