纯js分页代码(简洁实用)

2019-11-20 21:47:25

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来源：转载

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//每页显示字数
PageSize=5000;
//分页模式
flag=2;//1:根据字数自动分页 2:根据[NextPage]分页
//默认页
startpage = 1;
//导航显示样式 0:常规 1:直接 3:下拉
TopShowStyle = 1;
DownShowStyle = 0;

var currentSet,CutFlag,TotalByte,PageCount,key,tempText,tempPage;
key="";
currentSet=0;
var Text=xmlArticle.selectSingleNode("//Content").text;
TotalByte=Text.length;

if (flag==1)
{
PageCount=Math.round(TotalByte/PageSize);
if(parseFloat("0."+TotalByte%PageSize)>0){
   if(parseFloat("0."+TotalByte%PageSize)<0.5){
    PageCount=PageCount+1;
    }
}
var PageNum=new Array(PageCount+1);
var PageTitle=new Array(PageCount+1);
PageNum[0]=0;
PageTitle[0]="";

var sDrv1,sDrv2,sDrv3,sDrv4,sFlag;
var sDrvL,sTemL;
var sTem1,sTem2,k;
sFlag=0;

for(j=1;j<PageCount+1;j++){
   PageNum[j]=PageNum[j-1]+PageSize;
   PageTitle[j]="";
   //alert(j);
   sDrv1="<br>";
   sDrv2="<BR>";
   sDrv3="<Br>";
   sDrv4="<bR>";
   sDrvL=sDrv1.length;
   for(k=PageNum[j];k<=TotalByte;k++){
    sTem1=Text.substring(PageNum[j]-sDrvL,k);
    sTemL=sTem1.length;
    sTem2=sTem1.substring(sTemL-sDrvL,sTemL)
    if (sTem2==sDrv1 || sTem2==sDrv2 || sTem2==sDrv3 || sTem2==sDrv4)
    {
     sFlag=sFlag+1;
     PageNum[j]=k;
     break;
    }
   }
   if (PageNum[j]>TotalByte)
   {
    break;
   }
}
if (j<PageCount)
{
   PageNum.length=j;
   PageCount=j
}
if (PageCount>1&&sFlag>1&&PageCount<sFlag)
{
   PageCount=sFlag+1;
}
}
else{
//手动分页
var j,sFlag,PageCount,sText;
var sTitleFlag;
var PageNum=new Array();
var PageTitle=new Array();

PageSize=0;
j=1;
PageNum[0]=-10;
PageTitle[0]="";
sFlag=0;
sText=Text;

do
{
sText=Text.substring(PageNum[j-1]+10,TotalByte);

sFlag=sText.indexOf("[NextPage");

   if (sText.substring(sFlag+9,sFlag+10)=="=")
   {
    sTitleFlag=sText.indexOf("]",sFlag);
    PageTitle[j]=sText.substring(sFlag+10,sTitleFlag);
   }
   else{
    PageTitle[j]="";
   }

   if (sFlag>0)
   {
    PageNum[j]=sFlag+PageNum[j-1]+10;
   }
   else{
    PageNum[j]=TotalByte;
   }

j+=1;
}
while (PageNum[j-1]<TotalByte);

PageCount=j-1;
}

function text_pagination(Page){
var Output,Byte;

if(Page==null){Page=1;}

Output="";
Output=Output+"<table width=100% height=30 border=0 align=center cellpadding=0 cellspacing=0>";
Output=Output+"<tr>";
Output=Output+"<td height=1 background=Images/DotLine.gif></td>";
Output=Output+"</tr>";

//头部功能导航条
Output=Output+"<tr>";

   //正文查找

   Output=Output+"<td align=left bgcolor=#f0faff width='40%'> ";
   Output=Output+"<input type=text name=keys onchange='key=this.value' size=12> <input type=button name=search value='查找正文' onclick='searchkey();' style='width:60'>";
   Output=Output+"</td>";

   Output=Output+"<td align=right bgcolor=#f0faff>";

   //页码显示方式一
   //第x页：分页标题
   if (Page==0 || PageCount==0){
    Output=Output+"当前是：<font color=red>全文显示</font>" ;
   }
   else{
    if(TotalByte>PageSize){Byte=PageNum[Page]-PageNum[Page-1]}else{Byte=TotalByte};
    Output=Output+"第 <font color=red>"+Page+"</font> 页";
    if (PageTitle[Page]!="")
    {
     Output=Output+"：<font color=800000>"+PageTitle[Page]+"</font>";
    }
    Output+=' ';
   }

   //显示方式二
   //下拉菜单选择
   //if (PageCount>0)
   //{
   // Output=Output+Article_PageNav(2,Page);
   // Output=Output+" </td>";
   //}

   //显示方式三
   //页码选择列表
   //Output=Output+"<td align=right bgcolor=#f0faff>";
   //Output=Output+Article_PageNav(0,Page);
   //Output=Output+"</td>";

Output=Output+"</tr>";
Output=Output+"<tr>";
Output=Output+"<td height=1 background=Images/DotLine.gif></td>";
Output=Output+"</tr>";
Output=Output+"</table>";

//显示正文
if(Page==0) {
//不分页
   tempText=Text;
}
else{
//分页
   if (flag==1)
   //自动分页
   {
    tempText=Text.substring(PageNum[Page-1],PageNum[Page]);
   }
   else{
   //手动分页
    if (PageTitle[Page-1].length==0)
    {
     tempText=Text.substring(PageNum[Page-1]+10,PageNum[Page]);
    }
    else{
     tempText=Text.substring(PageNum[Page-1]+11+PageTitle[Page-1].length,PageNum[Page]);
    }
   }
}

//布置内容
Output=Output+"<div align=center>";
Output=Output+Article_PageNav(TopShowStyle,Page);
Output=Output+"</div>";

Output=Output+"<div id=world>";
Output=Output+tempText;
Output=Output+"</div>";
Output=Output+"<br>";

Output=Output+"<div align=center>";
Output=Output+Article_PageNav(DownShowStyle,Page);
Output=Output+"</div>";

article.innerHTML = Output;
if (Page>1)
{
   document.location.href='#top';
}

eval(document.all.keys).value=key;
if (key!=""){searchkey();}
}

function searchkey(){
//正文查找函数

h="<font class=keyworld>";
f="</font>";
keyset=new Array();
key=document.all.keys.value;
if (key==""){
   alert("请输入关键字！");
   return;
}
else{
keyset[0]=tempText.indexOf(key,0);
   if (keyset[0]<0){
     return;
   }else
    temp=tempText.substring(0,keyset[0]);
    temp=temp+h+key+f;
    temp2=tempText.substring(keyset[0]+key.length,tempText.length);
    for (i=1;i<tempText.length;i++) {
     keyset[i]=tempText.indexOf(key,keyset[i-1]+key.length);
     if(keyset[i]<0){
     temp=temp+tempText.substring(keyset[i-1]+key.length,tempText.length);
     break;
     }else{
     temp=temp+tempText.substring(keyset[i-1]+key.length,keyset[i])+h+key+f;
     }
    }
     world.innerHTML = temp;
   }
}

function Article_PageNav(ShowStyle,Page){
//分页码显示函数
//参数为调用样式，0=简单样式，1=标准样式
var temp="";

if (ShowStyle==0)
//简单样式
{
   tempPage=Page;
   if(TotalByte>PageSize){
    if (Page-4<=1){
     temp=temp+"<font face=webdings color=#999999>9</font>";
     if (Page<=1){temp=temp+"<font face=webdings color=#999999>7</font>";}else{temp=temp+"<a href=javascript:text_pagination("+(Page-1)+")><font face=webdings>7</font></a>";}
     if (PageCount>10){
      for(i=1;i<8;i++){
       if (i==Page){
        temp=temp+"<font color=red>"+i+"</font> ";
       }else{
        temp=temp+"<a href=javascript:text_pagination("+i+") >"+i+"</a>"+" ";
       }
      }
     temp=temp+" ...";
     }
     else{
      for(i=1;i<PageCount+1;i++){
       if (i==Page){
        temp=temp+"<font color=red>"+i+"</font> ";
       }
       else{
        temp=temp+"<a href=javascript:text_pagination("+i+") >"+i+"</a>"+" ";
       }
      }
     }

     if (Page==PageCount){temp=temp+"<font face=webdings color=#999999>8</font>";}else{temp=temp+"<a href=javascript:text_pagination("+(Page+1)+")><font face=webdings>8</font></a>";}
     if(PageCount<10){temp=temp+"<font face=webdings color=#999999>:</font>";}else{temp=temp+"<a href=javascript:text_pagination("+PageCount+")><font face=webdings>:</font></a>";}
    }
    else if(Page+4<=PageCount){
    temp=temp+"<a href=javascript:text_pagination(1)><font face=webdings>9</font></a>";
    temp=temp+"<a href=javascript:text_pagination("+(Page-1)+")><font face=webdings>7</font></a>";
     if (PageCount>10){
      temp=temp+"..";
      for(i=Page-4;i<Page+4;i++){
       if (i==Page){
        temp=temp+"<font color=red>"+i+"</font> ";
       }
       else{
       temp=temp+"<a href=javascript:text_pagination("+i+") >"+i+"</a>"+" ";
       }
      }
      temp=temp+" ..";
     }
     else{
      for(i=1;i<PageCount+1;i++){
       if (i==Page){
        temp=temp+"<font color=red>"+i+"</font> ";
       }
       else{
       temp=temp+"<a href=javascript:text_pagination("+i+") >"+i+"</a>"+" ";
       }
      }
     }

     if (Page==PageCount){temp=temp+"<font face=webdings color=#999999>8</font>";}else{temp=temp+"<a href=javascript:text_pagination("+(Page+1)+")><font face=webdings>8</font></a>";}
     temp=temp+"<a href=javascript:text_pagination("+PageCount+")><font face=webdings>:</font></a>";

    }
    else{
     temp=temp+"<a href=javascript:text_pagination(1)><font face=webdings>9</font></a>";
     temp=temp+"<a href=javascript:text_pagination("+(Page-1)+")><font face=webdings>7</font></a>";
     temp=temp+".."

     for(i=Page-2;i<PageCount+1;i++){
      if (i==Page){
       temp=temp+"<font color=red>"+i+"</font> ";
      }
      else{
       temp=temp+"<a href=javascript:text_pagination("+i+") >"+i+"</a>"+" ";
      }
     }

   temp=temp+" <a href=javascript:text_pagination(0)>显示全部</a>"
}
else if (ShowStyle==1)
//标准样式
{
   if(TotalByte>PageSize){if(Page!=0){if(Page!=1){temp=temp+"<a href='#top' onclick=javascript:text_pagination("+(Page-1)+")><font color=3366cc>[上一页]</font></a>  ";}}}
   for (i=1;i<PageCount+1 ;i++ )
   {
    if (Page==i)
    {
     temp=temp+"<font color=800000>["+i+"]</font>  ";
    }
    else{
     temp=temp+"<a href='#top' onclick=javascript:text_pagination("+i+")><font color=3366cc>["+i+"]</font></a>  ";
    }
   }
   temp=temp+"<a name='foot'></a>";
   if(TotalByte>PageSize){if(Page!=0){if(Page!=PageCount){temp=temp+"<a href='#top' onclick=javascript:text_pagination("+(Page+1)+")><font color=3366cc>[下一页]</font></a>";}}}

   temp=temp+" <a href=javascript:text_pagination(0)><font color=3366cc>显示全部</font></a>"
}
else if (ShowStyle==2)
//下拉菜单样式
{
   temp=temp+'<select onchange="text_pagination(this.value)">'
   for (i=1;i<PageCount+1 ;i++ )
   {
    if (Page==i)
    {
     temp=temp+"<option value='"+i+"' selected style='color:red'>第 "+i+" 页"

    }
    else{
     temp=temp+"<option value='"+i+"'>第 "+i+" 页";
    }
    if (PageTitle[i].length!=0)
    {
     temp=temp+'：'+PageTitle[i];
    }
    temp=temp+"</option>";
   }
   temp=temp+"</select>";
}