js加強(qiáng)的經(jīng)典分頁實(shí)例

更新時(shí)間：2013年03月15日 11:26:48 作者：

js加強(qiáng)的經(jīng)典分頁實(shí)例，需要的朋友可以參考一下

1顯示的頁面：

<!DOCTYPE html>

< html>
<head>
<title>js_pageusers.html</title>

<script type="text/javascript" src="./js/pageuser.js"></script>
</head>

</thead>

</table>

</div>
</body>

</html>

復(fù)制代碼代碼如下:

window.onload =function(){
var pagesize = 3;//每頁顯示的記錄數(shù)
var recondsize = 0;//總記錄數(shù)
var countpage = 0;//總頁數(shù)
var nowpage= 1;
var users = new Array();//存放所有的記錄

var start = 0; //保存當(dāng)前頁開始的記錄
var end = 0 ;//保存當(dāng)前頁結(jié)束的記錄

var domUserName = $("userName");
var domUserSex = $("userSex");
var domUserRole = $("userRole");

var domshowUsers = $("showUsers");
var addBtn = $("addUsers");

//為按鈕注冊(cè)事件
addBtn.onclick = function() {
//創(chuàng)建user對(duì)象
var user = new User(domUserName.value, domUserSex.value,
domUserRole.value);
//把user對(duì)象存放數(shù)組中
users.push(user);
recondsize = users.length; //得出總記錄數(shù)
//計(jì)算出總頁數(shù)
countpage = recondsize % pagesize == 0 ? recondsize / pagesize : Math
.ceil(recondsize / pagesize);

if (recondsize > pagesize) { //當(dāng)總記錄大于pagezie 思路從后往前數(shù)3個(gè)數(shù)
start = recondsize-pagesize;
end=recondsize;
}else{ // pagesize start =1;
start=0;
end=recondsize; //end=實(shí)際的個(gè)數(shù) 就是 recondsize
}

//調(diào)用顯示user的方法
showUser(users,start,end,recondsize,countpage,domshowUsers);

}
//獲取分頁相關(guān)的按鈕
var firstPage = $("firstPage");
var backPage = $("backPage");
var nextPage = $("nextPage");
var lastPage = $("lastPage");

firstPage.onclick = function() {
nowpage = 1;

if (recondsize<= pagesize && recondsize > 0) {
start = 0;
end = recondsize;
}else{
start=0;
end=pagesize;
}

showUser(users,start,end,recondsize,countpage,domshowUsers);

}

backPage.onclick = function() {
nowpage = nowpage-1;//重新賦值

if(nowpage<=1){
nowpage=1;
}

if (recondsize <= pagesize && recondsize > 0) {
start = 0;
end = recondsize;
}else{
start=(nowpage-1)*pagesize;
end = (nowpage-1)*pagesize+pagesize;
}

showUser(users,start,end,recondsize,countpage,domshowUsers);

}

nextPage.onclick = function() {
nowpage = nowpage+1;//重新賦值

if(nowpage>=countpage){
nowpage=countpage;
}

if (recondsize <= pagesize && recondsize > 0) {
start = 0;
end = recondsize;
}else{
start=(nowpage-1)*pagesize;
if((nowpage-1)*pagesize+pagesize>=recondsize){
end = recondsize;
}else{
end =(nowpage-1)*pagesize+pagesize;
}
}
showUser(users,start,end,recondsize,countpage,domshowUsers);

}
lastPage.onclick = function() {
nowpage = countpage;//重新賦值

if (recondsize <= pagesize && recondsize > 0) {
start = 0;
end = recondsize;
}else{
start=(nowpage-1)*pagesize;
end = recondsize;
}
showUser(users,start,end,recondsize,countpage,domshowUsers);

}

//創(chuàng)建一個(gè)Function函數(shù) 函數(shù)是保存User對(duì)象數(shù)據(jù)的
function User(name, sex, role) {
this.name = name;
this.sex = sex;
this.role = role;
}

function $(id) {
return document.getElementById(id);
}

function showUser(users,start,end,recondsize,countpage,domshowUsers){

//清空數(shù)據(jù)
for ( var jj = 0; jj < domshowUsers.childNodes.length;) {
domshowUsers.removeChild(domshowUsers.childNodes[jj]);
}

//for循環(huán)添加的
for(var i=start;i<end;i++){
var user = users[i];//考慮
//創(chuàng)建一行
var tr = document.createElement("tr");
//創(chuàng)建列
var td1 = document.createElement("td");
//創(chuàng)建文本節(jié)點(diǎn)
var td1TextNode = document.createTextNode(user.name);
//文本節(jié)點(diǎn)添加到td中
td1.appendChild(td1TextNode);

//創(chuàng)建列
var td2 = document.createElement("td");
//創(chuàng)建文本節(jié)點(diǎn)
var td2TextNode = document.createTextNode(user.sex);
//文本節(jié)點(diǎn)添加到td中
td2.appendChild(td2TextNode);

//創(chuàng)建列
var td3 = document.createElement("td");
//創(chuàng)建文本節(jié)點(diǎn)
var td3TextNode = document.createTextNode(user.role);
//文本節(jié)點(diǎn)添加到td中
td3.appendChild(td3TextNode);

//把列添加到行中
tr.appendChild(td1);
tr.appendChild(td2);
tr.appendChild(td3);

//把行添加到tbody中
if(domshowUsers.hasChildNodes()){
domshowUsers.insertBefore(tr,domshowUsers.firstChild);//再最后一個(gè)數(shù)據(jù)之前添加數(shù)據(jù)
}else{
domshowUsers.appendChild(tr);//添加到末尾
}
}
document.getElementById("msg").innerHTML = "總共：{" + recondsize
+ "}條記錄,共{" + countpage + "}頁";
}