Javascript表格翻页效果的具体实现_javascript技巧

Cookie = {
Set : function (){
var name = arguments[0], value = escape(arguments[1]), days = 365, path = "/";
if(arguments.length > 2) days = arguments[2];
if(arguments.length > 3) path = arguments[3];
with(new Date()){
setDate(getDate()+days);
days=toUTCString();
}
document.cookie = "{0}={1};expires={2};path={3}".format(name, value, days, path);
},
Get : function (){
var returnValue=document.cookie.match(new RegExp("[\b\^;]?" + arguments[0] + "=([^;]*)(?=;|\b|$)","i"));
return returnValue?unescape(returnValue[1]):returnValue;
}
}
String.prototype.format = function(){
var tmpStr = this;
var iLen = arguments.length;
for(var i=0;itmpStr = tmpStr.replace(new RegExp("\\{" + i + "\\}", "g"), arguments[i]);
}
return tmpStr;
}
function setPagenum(){//整理Cookie
pagenum = Cookie.Get("pagenum");
if(pagenum=="" || pagenum<1){
pagenum=1;
}
}

setPagenum();

//重新整理当前页码，如果页面小于1，则赋值为1，如果大于总页数，则等于总页数
coordinatePagenum(pagenum);

//根据当前要显示的页码取得当前面里第一条记录的号码
var pageBegin = (record*(pagenum-1)+1)|0;

//根据当前要显示的页码取得当前面里最后一条记录的号码
var pageEnd = record*pagenum;

function showhiddenRecord(pagenum){
number.innerHTML=pagenum;
if(pagenum<=1){
theFirstPage.innerHTML="第一页";
thePrePage.innerHTML="上一页";
}else{
theFirstPage.innerHTML="第一页";
thePrePage.innerHTML="上一页";
}
if(pagenum>=pageTotal){
theNextPage.innerHTML="下一页";
theLastPage.innerHTML="最后一页";
}else{
theNextPage.innerHTML="下一页";
theLastPage.innerHTML="最后一页";
}
document.getElementById('goto').value=pagenum;
//根据当前要显示的页码取得当前面里第一条记录的号码
pageBegin = (record*(pagenum-1)+1)|0;

//根据当前要显示的页码取得当前面里最后一条记录的号码
pageEnd = record*pagenum;
for(var i=1;i<=count;i++){
if(i>=pageBegin && i<=pageEnd){
mytable.rows[i].style.display="";
}else{
mytable.rows[i].style.display="none";
}
}
Cookie.Set("pagenum", pagenum);
}

function firstPage(){
pagenum=1;
showhiddenRecord(pagenum);
}

function lastPage(){
showhiddenRecord(pageTotal);
}

//重新整理当前页码，如果页面小于1，则赋值为1，如果大于总页数，则等于总页数
function coordinatePagenum(num){
if(num<1){
num="1";
}else if(num>pageTotal){
num=pageTotal;
}
}

function prePage(){
pagenum--;
coordinatePagenum(pagenum);
showhiddenRecord(pagenum);
}

function nextPage(){
pagenum++;
coordinatePagenum(pagenum);
showhiddenRecord(pagenum);
}

function gotoPage(num){
coordinatePagenum(pagenum);
showhiddenRecord(num);
}
//-->