转自---〉大大IT__歇脚处--霍健伟

都是高人 

 

学习下，学习js类的写法，从而映射到java类的写法，不知道自己的想法正确不？

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ByVal没事做写的JS页码跳转类

作者:dadait 日期:2005-10-31

字体大小: 小 中 大

几乎所有样式皆可依据对几个HTML原型属性的赋值变化而变化.提供了超级自由的属性以供设置风格代码未优化.

 

<span id="viewlayer"></span>

<script language="JavaScript">...
function Page()...{
     this.size;            //当前页两侧伸展页数
     this.PageSize;            //每页记录数
     this.style;            /**//* 统计信息HTML原型代码
                       元素对应:记录总数:"{$count}".总页数:"{$pagecount}".每页记录数:"{$pagesize}".当前页码:"{$pagenum}"
                       */

     this.liststyle;            /**//* 页码列表HTML原型代码,规则形式,
                       将被分割成一个6个元素的数组.
                       例如为"首页|上一页|下一页|尾页|当前页码|普通页码"样子的HTML代码
                       以"{$pagenum}"为页码元素,处理后此位置则为页码值
                       如果有一项或多项为空仍需预留位置,如"首页|||尾页|当前页码|普通页码" */
     this.jumpstyle;            //自由跳转HTML原型代码
     this.count;            //总记录数
     this.urlstyle;            //附加页码前的链接代码及样式.以"{$page}"为页码元素,处理后此位置则为此链接页码值."{$location}"为链接文本元素
     this.listurlstyle;      //附加页码前的链接代码及样式(使用于页码列表).以"{$page}"为页码元素,处理后此位置则为此链接页码值."{$location}"为链接文本元素
     this.locationPage = 1;      //当前页码
     this.jumpurl;            //自由跳转的URL前缀
     this.ParName = "page";      //页码的URL参数名

     this.CreateMain = function()...{
           if(this.style==null)...{
                 return("缺少页码样式");
           }else...{
                 var temp
                 var pageCount
                 if(this.count%this.PageSize!=0)...{
                       pageCount = parseInt(this.count / this.PageSize) + 1;
                 }else...{
                       pageCount = parseInt(this.count / this.PageSize);
                 }
                 if(this.locationPage>pageCount) this.locationPage = pageCount;
                 temp = this.style;
                 temp = temp.replace("{$count}",this.count);
                 temp = temp.replace("{$pagecount}",pageCount);
                 temp = temp.replace("{$pagesize}",this.PageSize);
                 temp = temp.replace("{$pagenum}",this.locationPage);
                 return(temp);
           }
     }

     this.CreateList = function()...{
           if(this.liststyle==null)...{
                 return("缺少页码样式");
           }else...{                  
                 if(this.count%this.size!=0)...{
                       ALLPageCount = parseInt(this.count / this.PageSize) + 1;
                 }else...{
                       ALLPageCount = parseInt(this.count / this.PageSize);
                 }
                 if(this.locationPage>ALLPageCount) this.locationPage = ALLPageCount;
                 var temp
                 var returnTemp = "";
                 var returnstr = "";
                 temp = this.liststyle;
                 temp = temp.split("|");
                 if(temp.length<6) return("页码列表样式定义错误");
                 if(temp[0]!=""&&this.locationPage>1)...{
                       returnTemp += this.urlstyle;
                       returnTemp = returnTemp.replace("{$page}",1);
                       returnTemp = returnTemp.replace("{$location}",temp[0]);
                 }
                 if(temp[1]!=""&&this.locationPage>1)...{
                       returnTemp += this.urlstyle;
                       returnTemp = returnTemp.replace("{$page}",this.locationPage - 1);
                       returnTemp = returnTemp.replace("{$location}",temp[1]);
                 }
                 if(temp[5]!="")...{
                       var start = this.locationPage - this.size;
                       var end = this.locationPage + this.size;
                       var looptemp = "";
                       if(start<1) start = 1;
                       if(end-start<this.size*2) end = start + this.size * 2;
                       if(end>ALLPageCount) end = ALLPageCount;
                       for(var i=start;i<=end;i++)...{
                             looptemp += this.listurlstyle;
                             if(i==this.locationPage&&temp[4]!="")...{
                                   looptemp = looptemp.replace("{$location}",temp[4]);      
                             }else...{
                                   looptemp = looptemp.replace("{$location}",temp[5]);
                             }
                             looptemp = looptemp.replace("{$page}",i);
                             looptemp = looptemp.replace("{$pagenum}",i);
                       }
                             returnTemp += looptemp;
                 }
                 if(temp[2]!=""&&this.locationPage<ALLPageCount)...{
                       returnTemp += this.urlstyle;
                       returnTemp = returnTemp.replace("{$page}",this.locationPage + 1);
                       returnTemp = returnTemp.replace("{$location}",temp[2]);
                 }
                 if(temp[3]!=""&&this.locationPage<ALLPageCount)...{
                       returnTemp += this.urlstyle;
                       returnTemp = returnTemp.replace("{$page}",ALLPageCount);
                       returnTemp = returnTemp.replace("{$location}",temp[3]);
                 }
                 return(returnTemp);
           }
     }
     this.CreateFreejump = function()...{
           var temp = this.jumpstyle;
           if(temp==null) return("缺少页码样式");

           temp = temp.replace("{$page}",this.locationPage)
           return(temp);
     }
     this.ChangePage = function()...{
           var GotoPage = document.all.PageValue.value;
           var ALLPageCount = 0;
           if(GotoPage!=null&&GotoPage!="")...{
                 GotoPage = parseInt(GotoPage);
                 if(this.count%this.size!=0)...{
                       ALLPageCount = parseInt(this.count / this.PageSize) + 1;
                 }else...{
                       ALLPageCount = parseInt(this.count / this.PageSize);
                 }
                 if(GotoPage>0&&GotoPage<ALLPageCount) location.href=this.jumpurl + this.ParName + "=" + GotoPage;
           }
     }
     this.GetPage = function()...{
           var str = this.ParName + "=";
           var gvalue = 1;
           if(location.href.indexOf(str)>0)...{
                 gvalue = location.href.substring(location.href.indexOf(str) + str.length,location.href.length);
                 if(gvalue.indexOf('&')>0) gvalue = gvalue.substring(0,gvalue.indexOf('&'));
                 if(gvalue="/="") gvalue = 1;
           }
           return(parseInt(gvalue));
     }
}

//使用实例
var P = new Page();
P.ParName = "page";
P.size = 5;
P.PageSize = 10;
P.count = 144532;
P.jumpurl = "msn.htm?";
P.locationPage = P.GetPage();

P.style = "共有...{$count}条记录.共分...{$pagecount}页.每页...{$pagesize}条.当前第...{$pagenum}页. ";
P.liststyle = "首页|<<|>>|末页|<font color=red><b>...{$pagenum}</b></font>|<b>...{$pagenum}</b>";
P.urlstyle = " <a href="msn.htm?page={$page}">{$location}</a> ";
P.listurlstyle = " [ <a href="msn.htm?page={$page}">{$location}</a> ] ";
P.jumpstyle = "<input type="text" size="5" value="{$page}" name="PageValue"> <input type=button value="跳转" onclick="P.ChangePage()">";
viewlayer.innerHTML = P.CreateMain() + P.CreateList() + P.CreateFreejump();

</script>