var JsPager={};
JsPager.Init =function(pageContainerID,pageCount,pageIndex)
{
if(!pageContainerID || !pageCount || !pageIndex)
{
alert("Parameter pageContainerIDˇ˘pageCountˇ˘pageIndex Can not be empty .");
return ;
}
this.pageContainer = document.getElementById(pageContainerID);
if(!this.pageContainer)
{
alert("pageContainer Can not be find .");
return ;
}
if(!String(pageCount).match(/^\d{1,8}$/) || !String(pageIndex).match(/^\d{1,8}$/))
{
alert("Parameter pageCountˇ˘pageIndex Need to be digital .");
return ;
}
this.pageCount = pageCount;
this.pageIndex = pageIndex;
}
JsPager.Init.prototype=
{
pagePrefix:"pagePrefix_",
expandName:"",
prevPage:"Prev",
nextPage:"Next",
showPageCountPre:4,
showPageCount:10,
enableUpDwon:true,
pager:function()
{
if(!this.pageContainer || !this.pageCount || !this.pageIndex)
return ;
if(this.pageCount<=1)
{
this.pageContainer.innerHTML ="";
return ;
}
if(this.pageIndex<1)
this.pageIndex = 1;
if(this.pageIndex>this.pageCount)
this.pageIndex = this.pageCount;
var strPage ="";
strPage +=this.renderUpPage();
strPage +=this.renderPage();
strPage +=this.renderDwonPage();
strPage +="
";
this.pageContainer.innerHTML =strPage;
},
renderUpPage:function()
{
var strUpDwon ="";
if(!this.enableUpDwon)
return strUpDwon;
var upPageIndex = this.pageIndex - 1;
if(upPageIndex<1)
upPageIndex=1;
strUpDwon+="" + this.prevPage + "";
return strUpDwon;
},
renderDwonPage:function()
{
var strUpDwon ="";
if(!this.enableUpDwon)
return strUpDwon;
var downPageIndex = this.pageIndex + 1;
if(downPageIndex> this.pageCount)
downPageIndex=this.pageCount;
strUpDwon+="" + this.nextPage + "";
return strUpDwon;
},
renderPage:function()
{
var strPage ="";
var startIndex = this.pageIndex - this.showPageCountPre;
if(startIndex < 1)
startIndex=1;
var endIndex = startIndex + this.showPageCount;
if(endIndex> this.pageCount)
endIndex = this.pageCount;
if(startIndex == endIndex)
return strPage;
for(var i= startIndex ; i <= endIndex; i++ )
{
if(i== this.pageIndex)
strPage +="" + i + ""
else
strPage +="" + i + ""
}
return strPage;
}
}