虽然写的很烂，但至少全部都是自己写的，因为这个没有固定的顺序，所以就没有封装，如果你技术好的话，可以你写的分享给我，谢谢。
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>原生JS实现分页效果</title>
<style>
body{
margin:100px 200px;
}
#page{
margin:20px 0;
}
#page>#pre,#page>#next{
display:inline-block;
height: 34px;
line-height:34px;
padding: 0 18px;
border: 1px solid #e1e2e3;
text-decoration:none;
}
.list{
display:inline-block;
}
.list a{
text-decoration:none;
padding:0 5px;
}
.list a.current{
color:red;
}
</style>
</head>
<body>
<section id="box"></section>
<div id="page">
<a href="javascript:;" id="pre">上一页</a>
<div class="list"></div>
<a href="javascript:;" id="next">下一页</a>
</div>
</body>
</html>
<script>
'use strict'
// 获取元素
let domBox = document.getElementById("box");
let domPage = document.getElementById("page");
let domList = document.querySelector(".list");
let preNum = 0;
// 模拟数据
let arrJson = [
{title:'title_1',content:'Content_1'},
{title:'title_2',content:'Content_2'},
{title:'title_3',content:'Content_3'},
{title:'title_4',content:'Content_4'},
{title:'title_5',content:'Content_5'},
{title:'title_6',content:'Content_6'},
{title:'title_7',content:'Content_7'},
{title:'title_8',content:'Content_8'},
{title:'title_9',content:'Content_9'},
{title:'title_10',content:'Content_10'}
];
let jsonLen = arrJson.length;
// 设置规则
let each = 3;
let page = Math.ceil(jsonLen / each);
// 设置内容
for(let i=0;i<each;i++){
let domP = '<div>';
domP += '<h1>'+ arrJson[i].title +'</h1>';
domP += '<p>'+ arrJson[i].content +'</p>';
domP += '</div>'
domBox.innerHTML += domP;
}
// 设置列表页数
for(let i=0;i<page;i++){
let domA = document.createElement('a');
domA.href = 'javascript:;';
domA.innerHTML = i + 1;
domList.insertBefore(domA,null);
}
// 获取元素
let domListChild = domList.children;
// 获取页数
let domListLen = domListChild.length;
// 记录上一次单击的元素
let preDom = domList.children[0];
preDom.className = 'current';
// 切换页
domList.addEventListener('click',function(e){
// 获取目标元素
let target = e.target;
// 获取目标元素的标签名，并统一转换成小写
let targetName = target.nodeName.toLocaleLowerCase();
if(targetName==='a'){
// 添加class
preDom.className = '';
target.className = 'current';
// 改变当前单击的元素。
preDom = target;
// 改变当前元素索引
preNum = target.innerHTML-1;
// 先清空上个页面的内容
domBox.innerHTML = '';
// 因为顺序在1，2，3的时候没有规则，所以进行了判断。
if(target.innerHTML!=='1'){
if(target.innerHTML==='2'){
// 遍历每页的条数，并将内容添加到domBox中。
for(let i=0;i<each;i++){
let arrJsonCurrent = arrJson[i-1+(target.innerHTML*(each-1))];
if(arrJsonCurrent==null){break;}
let domP = '<div>';
domP += '<h1>'+ arrJsonCurrent.title +'</h1>';
domP += '<p>'+ arrJsonCurrent.content +'</p>';
domP += '</div>';
domBox.innerHTML += domP;
}
}else if(target.innerHTML==='3'){
for(let i=0;i<each;i++){
let arrJsonCurrent = arrJson[i+(target.innerHTML*(each-1))];
if(arrJsonCurrent==null){break;}
let domP = '<div>';
domP += '<h1>'+ arrJsonCurrent.title +'</h1>';
domP += '<p>'+ arrJsonCurrent.content +'</p>';
domP += '</div>';
domBox.innerHTML += domP;
}
}else{
for(let i=0;i<each;i++){
let arrJsonCurrent = arrJson[i + (target.innerHTML-each) +(target.innerHTML*(each-1))];
if(arrJsonCurrent==null){break;}
let domP = '<div>';
domP += '<h1>'+ arrJsonCurrent.title +'</h1>';
domP += '<p>'+ arrJsonCurrent.content +'</p>';
domP += '</div>';
domBox.innerHTML += domP;
}
}
}else{
for(let i=0;i<each;i++){
let arrJsonCurrent = arrJson[i];
if(arrJsonCurrent==null){break;}
let domP = '<div>';
domP += '<h1>'+ arrJsonCurrent.title +'</h1>';
domP += '<p>'+ arrJsonCurrent.content +'</p>';
domP += '</div>';
domBox.innerHTML += domP;
}
}
}
})
// 获取上一页和下一页元素
let pagePreDom = document.getElementById('pre');
let pageNextDom = document.getElementById('next');
// 上一页
pagePreDom.addEventListener('click',function(){
// 判断当前元素索引
if(preNum>0){
preNum --;
}
changeHtml(domBox,preNum,each);
})
// 下一页
pageNextDom.addEventListener('click',function(){
// 判断当前元素索引
if(preNum<domListLen-1){
preNum ++;
}
changeHtml(domBox,preNum,each);
})
// 改变box内容
function changeHtml(domBox,currentNum,each){
domBox.innerHTML = '';
preDom.className = '';
domListChild[currentNum].className = 'current';
preDom = domListChild[currentNum];
switch(currentNum){
case 0:
// 遍历元素
for(let i=0;i<each;i++){
let arrJsonCurrent = arrJson[currentNum+i];
if(arrJsonCurrent==null){break;}
let domP = '<div>';
domP += '<h1>'+ arrJsonCurrent.title +'</h1>';
domP += '<p>'+ arrJsonCurrent.content +'</p>';
domP += '</div>';
domBox.innerHTML += domP;
}
break;
case 1:
// 遍历元素
for(let i=0;i<each;i++){
let arrJsonCurrent = arrJson[each+i];
if(arrJsonCurrent==null){break;}
let domP = '<div>';
domP += '<h1>'+ arrJsonCurrent.title +'</h1>';
domP += '<p>'+ arrJsonCurrent.content +'</p>';
domP += '</div>';
domBox.innerHTML += domP;
}
break;
default:
// 遍历元素
for(let i=0;i<each;i++){
let arrJsonCurrent = arrJson[currentNum*each+i];
if(arrJsonCurrent==null){break;}
let domP = '<div>';
domP += '<h1>'+ arrJsonCurrent.title +'</h1>';
domP += '<p>'+ arrJsonCurrent.content +'</p>';
domP += '</div>';
domBox.innerHTML += domP;
}
break;
}
}
</script>