基于jQuery的js分页代码

function pagerBar(dataCount,pageSize,serverUrl,contentPlace,pagerbarPlace,callBack){ 
this.dataCount = dataCount; 
this.pageSize = pageSize; 
this.serverUrl = serverUrl; 
this.contentPlace = $("#"+contentPlace); 
this.pagerbarPlace = $("#"+pagerbarPlace); 
this.callBack = callBack; this.pageCount = 0; 
this.pageIndex = 1; 
this.curInfo = $("<span/>"); 
this.prePage = $("<span/>"); 
this.nextPage = $("<span/>"); 
this.init(); 
} 
pagerBar.prototype = { 
init : function(){ 
this.getPageCount(); 
this.initLink(); 
this.showBarInfo(); 
if(this.pageCount>0){ 
this.setLink(1); 
} 
}, 
getPageCount : function(){ 
this.pageCount = parseInt(this.dataCount / this.pageSize); 
if(this.dataCount % this.pageSize !=0){ 
this.pageCount++; 
} 
}, 
initLink : function(){ 
var self = this; 
this.prePage = $("<span/>").html("上一页").addClass("pageLink"); 
this.prePage.click(function(){ 
self.setLink(self.pageIndex-1); 
}); 
this.nextPage = $("<span/>").html("下一页").addClass("pageLink"); 
this.nextPage.click(function(){ 
self.setLink(self.pageIndex+1); 
}); 
this.pagerbarPlace.append(this.curInfo).append(this.prePage).append(this.nextPage); 
}, 
showBarInfo : function(){ 
this.prePage.hide(); 
this.nextPage.hide(); 
if(this.pageCount==0){ 
this.curInfo.html("暂时没有信息!"); 
} 
else if(this.pageCount==1){ 
this.curInfo.html("1/1"); 
} 
else{ 
this.curInfo.html(this.pageCount + "/" + this.pageIndex); 
} 
}, 
setLink : function(i){ 
var self = this; 
$.ajax({ 
url:self.serverUrl, 
type:"get", 
data:{pageSize:self.pageSize,pageIndex:i}, 
cache:false, 
error:function(){ 
alert("数据加载失败!"); 
}, 
success:function(htmlData){ 
self.contentPlace.html(htmlData); 
if(self.pageCount==1){ 
self.prePage.hide(); 
self.nextPage.hide(); 
}else{ 
if(i==1){ 
self.prePage.hide(); 
self.nextPage.show(); 
}else if(i==self.pageCount){ 
self.prePage.show(); 
self.nextPage.hide(); 
}else{ 
self.prePage.show(); 
self.nextPage.show(); 
} 
} 
self.pageIndex = i; 
self.curInfo.html(self.pageCount+"/"+self.pageIndex); 
if(self.callBack){ 
self.callBack(); 
} 
} 
}); 
}, 
changeServerUrl : function(dataCount,serverUrl){ 
this.dataCount = dataCount; 
this.serverUrl = serverUrl; 
this.pageIndex=1; 
this.getPageCount(); 
this.showBarInfo(); 
this.contentPlace.html(""); 
if(this.pageCount>0){ 
this.setLink(1); 
} 
}, 
dataCountDec : function(){ 
this.dataCount--; 
this.getPageCount(); 
if(this.pageCount<this.pageIndex){ 
this.pageIndex = this.pageCount; 
} 
if(this.pageIndex>0){ 
this.setLink(this.pageIndex); 
} 
this.showBarInfo(); 
} 
}