JS实现当前页居中分页效果的方法

本文实例讲述了JS实现当前页居中分页效果的方法。分享给大家供大家参考。具体实现方法如下：


function show_page(cur_pc)
{
var cp=cur_pc; //curent page count
var tp=this.p; //total page count
var sp=this.pc; //show page count
var bp; //begin page count
var ep; //end page count
if(sp%2==0) sp=sp+1; //this process need an odd number
var dp=Math.floor(sp/2); //each side count to show
var dif=tp-sp; //check weather it have enough page to make mid-show
var f=cp-dp; //to check weather it has enough page to make mid-show from the begin
var g=tp-(cp+dp); //to check weather it has enough page to make mid-show from the end
if(sp && dif>=0)
{
if(g>0)
{
if(f>0)
{
bp=f;
ep=cp+dp;
}
else
{
bp=1;
ep=2*dp+1;
}
}
else
{
bp=tp-2*dp;
ep=tp;
}
}
else
{
bp=1;
ep=tp;
}
var buf=[];
for(var i=bp;i<=ep;i++)
{
if(i==cur_pc)
{
buf.push("<a href='javascript:;' class='current'>",i,"</a>");
}
else
{
buf.push("<a href='javascript:;' class='normal'>",i,"</a>");
}
}
document.write(buf);
}



运行效果如下图所示：

希望本文所述对大家的javascript程序设计有所帮助。


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