<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Document</title>
<script>
//创建xhr对象
function XHR(){
var xhr;
if(window.XMLHttpRequest){// ie7+ 火狐 谷歌
xhr=new XMLHttpRequest();
}else{
xhr = new ActiveObject("Microsoft.XMLHTTP"); //ie6
}
return xhr;
}
var pageSize=10;
var index=0;//全局变量
var response;
function uu(){
for(var k=index*pageSize;k<index*pageSize+pageSize;k++){
var tr=document.createElement("tr");
//name
var name=document.createElement("td");
name.innerHTML=response[k].name;
tr.appendChild(name);
//age
var age=document.createElement("td");
age.innerHTML=response[k].age;
tr.appendChild(age);
//sex
var sex=document.createElement("td");
sex.innerHTML=response[k].sex;
tr.appendChild(sex);
//phone
var phone=document.createElement("td");
phone.innerHTML=response[k].phone;
tr.appendChild(phone);
//address
var address=document.createElement("td");
address.innerHTML=response[k].address;
tr.appendChild(address);
var qq=document.createElement("td");
qq.innerHTML=response[k].qq;
tr.appendChild(qq);
tbody.appendChild(tr);
}
}
window.onload=function(){
var xhr=XHR();
xhr.open("post","person.json",true);
xhr.onreadystatechange=function(){
var box=document.getElementById("box");
var box_span=box.getElementsByTagName("span");
var tbody=document.getElementById("tbody");
var currentPage=document.getElementById("currentPage");
var prev=document.getElementById("prev");
var next=document.getElementById("next");
if(xhr.readyState==4&&xhr.status==200){
response=JSON.parse(xhr.responseText);
//totalPage 总页数=数据的长度/每页显示的记录数
var totalPage=0;
// 每页显示的记录数
var num=response.length;//数据的长度
//totalPage=num/pageSize;
//判断数据长度/每页显示的记录数 如果不能整除时也算一页
if(num/pageSize > parseInt(num/pageSize)){
totalPage=parseInt(num/pageSize)+1;
}else{
totalPage=parseInt(num/pageSize);
}
console.log(totalPage);
//总共页数
var totalPage_a=document.createElement("a");
totalPage_a.innerHTML="总共"+totalPage+"页";
box.appendChild(totalPage_a);
//当前是第1页
var currentPage=document.createElement("a");
currentPage.innerHTML="当前是第1页";
currentPage.id="currentPage";
box.appendChild(currentPage);
//循坏分页 totalPage
for(var i=0;i<totalPage;i++){
var span=document.createElement("span");
span.setAttribute("index",i);
span.innerHTML="第"+(i+1)+"页";
box.appendChild(span);
if(i==0){
span.innerHTML="首页";
span.className="on";
}
if(i==totalPage-1){
span.innerHTML="尾页";
}
}
//上一页
var prev=document.createElement("a");
prev.innerHTML="上一页";
prev.id="prev";
box.appendChild(prev);
//下一页
var next=document.createElement("a");
next.innerHTML="下一页";
next.id="next";
box.appendChild( next);
//对象每页按钮添加事件
for(var j=0;j<box_span.length;j++){
box_span[j].onclick=function(){
index=Number(this.getAttribute("index"));
console.log(index);
tbody.innerHTML=" ";
currentPage.innerHTML="当前是第"+(index+1)+"页";
for(var m=0;m<box_span.length;m++ ){
box_span[m].className="";
}
this.className="on";
uu();
}
}
//点击上一页
prev.onclick=function(){
console.log(index);
if(index>=5){
box_span[index].style.display="none";
//box_span[index].style.display="inline-block";
box_span[index-1].style.display="inline-block";
}
index--;
if(index<=0){
index=0;
}
currentPage.innerHTML="当前是第"+(index+1)+"页";
tbody.innerHTML=" ";
for(var n=0;n<box_span.length;n++){
box_span[n].className="";
}
box_span[index].className="on";
uu();
}
//点击下一页
next.onclick=function(){
index++;
if(index>=totalPage){
index=totalPage-1;
}
currentPage.innerHTML="当前是第"+(index+1)+"页";
tbody.innerHTML=" ";
for(var n=0;n<box_span.length;n++){
box_span[n].className="";
}
box_span[index].className="on";
uu();
// 分页数大于5 页时，对应index的分页显示，它的上一个隐藏
if(index>=5){
box_span[index].style.display="inline-block";
box_span[index-1].style.display="none";
}
}
uu();
}
// 分页数大于5 页时，隐藏5后面的分页，最后一个不隐藏
for(var h=5;h<box_span.length-1;h++){
box_span[h].style.display="none";
}
}
xhr.send();
}
</script>
<style>
*{padding: 0px;margin:0px;}
#box a{margin-left: 10px;}
#box span{margin-left: 10px;}
.on{background-color: red;}
</style>
</head>
<body>
<table border="1" id="tab">
<thead>
<tr>
<th>name</th>
<th>age</th>
<th>sex</th>
<th>phone</th>
<th>address</th>
<th>qq</th>
</tr>
</thead>
<tbody id="tbody">
</tbody>
</table>
<div id="box">
</div>
</body>
</html>