原生javascript分页 html分页与ajax数据请求结合使用 前端js分页
原生javascript分页功能，与后台结合使用ajax请求数据，是目前大多数前后端分离建站使用的分页展示数据的逻辑
使用示例：
效果图：
index.html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>分页</title>
<!-- 分页css -->
<link rel="stylesheet" href="pages.css">
<style type="text/css">
html,body,div {padding: 0;margin: 0;}
html {font-family: '微软雅黑', Arial, Verdana, arial, serif;}
#content div {padding: 10px;background: #f2f2f2;margin-bottom: 1px;}
</style>
</head>
<body>
<div id="content"></div>
<!-- 分页DOM -->
<div id="pagination" class="pagination"></div>
<!-- 引入分页js -->
<script src="pages.js"></script>
<!-- ajax函数,需要了解请点击这里:https://blog.csdn.net/u012780176/article/details/79278479 -->
<script src="ajax.js"></script>
<script>
window.onload = function() {
var url = 'https://cnodejs.org/api/v1/topics?limit=10&page=';
var content = document.getElementById('content');
var tmp = '';
// 进入页面初始化请求第一页数据
getData(1);
// 使用ajax函数请求数据并渲染到页面
function getData(page) {
content.innerHTML = '正在加载...';
ajax({
url: url + page,
type: "get",
dataType: "json",
success: function(data) {
var list = data.data;
list.forEach(function(context) {
tmp += '<div>' + context.title + '</div>';
});
content.innerHTML = tmp;
tmp = '';
},
error: function(err) {
alert('请求数据失败');
}
})
}
// 示例化分页组件
new myPagination({
id: 'pagination',
curPage: 1, //初始页码
pageTotal: 50, //总页数
pageAmount: 10, //每页多少条
dataTotal: 500, //总共多少条数据
pageSize: 5, //可选,分页个数
showPageTotalFlag: true, //是否显示数据统计
showSkipInputFlag: true, //是否支持跳转
getPage: function(page) {
// 点击分页按钮请求数据
getData(page);
}
})
}
</script>
</body>
</html>
pages.js：
function myPagination(options) {
var pageSize = options.pageSize,
pageTotal = options.pageTotal,
curPage = options.curPage,
id = options.id,
getPage = options.getPage,
showPageTotalFlag = options.showPageTotalFlag,
showSkipInputFlag = options.showSkipInputFlag,
pageAmount = options.pageAmount,
dataTotal = options.dataTotal;
this.pageSize = pageSize || 5; //分页个数
this.pageTotal = pageTotal; //总共多少页
this.pageAmount = pageAmount; //每页多少条
this.dataTotal = dataTotal; //总共多少数据
this.curPage = curPage || 1; //初始页码
this.ul = document.createElement('ul');
this.id = id;
this.getPage = getPage;
this.middlePageSize = (this.pageSize - 1) / 2;
this.showPageTotalFlag = showPageTotalFlag || false; //是否显示数据统计
this.showSkipInputFlag = showSkipInputFlag || false; //是否支持跳转
this.init();
};
myPagination.prototype = {
init: function init() {
var pagination = document.getElementById(this.id);
pagination.innerHTML = '';
this.ul.innerHTML = '';
pagination.appendChild(this.ul);
var that = this;
//首页
that.firstPage();
//上一页
that.lastPage();
//分页
that.getPages().forEach(function (item) {
var li = document.createElement('li');
if (item == that.curPage) {
li.className = 'active';
} else {
li.onclick = function () {
that.curPage = parseInt(this.innerHTML);
that.init();
that.getPage(that.curPage);
};
}
li.innerHTML = item;
that.ul.appendChild(li);
});
//下一页
that.nextPage();
//尾页
that.finalPage();
//是否支持跳转
if (that.showSkipInputFlag)
that.showSkipInput();
//是否显示总页数,每页个数,数据
if (that.showPageTotalFlag)
that.showPageTotal();
},
//首页
firstPage: function firstPage() {
var that = this;
var li = document.createElement('li');
li.innerHTML = '首页';
this.ul.appendChild(li);
li.onclick = function () {
var val = parseInt(1);
that.curPage = val;
that.getPage(that.curPage);
that.init();
};
},
//上一页
lastPage: function lastPage() {
var that = this;
var li = document.createElement('li');
li.innerHTML = '<';
if (parseInt(that.curPage) > 1) {
li.onclick = function () {
that.curPage = parseInt(that.curPage) - 1;
that.init();
that.getPage(that.curPage);
};
} else {
li.className = 'disabled';
}
this.ul.appendChild(li);
},
//分页
getPages: function getPages() {
var pag = [];
if (this.curPage <= this.pageTotal) {
if (this.curPage < this.pageSize - this.middlePageSize) {
//当前页数小于显示条数
var i = Math.min(this.pageSize, this.pageTotal);
while (i) {
pag.unshift(i--);
}
} else {
//当前页数大于显示条数
var middle = this.curPage - Math.floor(this.pageSize / 2),
//从哪里开始
i = this.pageSize;
if (middle > this.pageTotal - this.pageSize) {
middle = this.pageTotal - this.pageSize + 1;
}
while (i--) {
pag.push(middle++);
}
}
} else {
console.error('当前页数不能大于总页数');
}
if (!this.pageSize) {
console.error('显示页数不能为空或者0');
}
return pag;
},
//下一页
nextPage: function nextPage() {
var that = this;
var li = document.createElement('li');
li.innerHTML = '>';
if (parseInt(that.curPage) < parseInt(that.pageTotal)) {
li.onclick = function () {
that.curPage = parseInt(that.curPage) + 1;
that.init();
that.getPage(that.curPage);
};
} else {
li.className = 'disabled';
}
this.ul.appendChild(li);
},
//尾页
finalPage: function finalPage() {
var that = this;
var li = document.createElement('li');
li.innerHTML = '尾页';
this.ul.appendChild(li);
li.onclick = function () {
var yyfinalPage = that.pageTotal;
var val = parseInt(yyfinalPage);
that.curPage = val;
that.getPage(that.curPage);
that.init();
};
},
//是否支持跳转
showSkipInput: function showSkipInput() {
var that = this;
var li = document.createElement('li');
li.className = 'totalPage';
var span1 = document.createElement('span');
span1.innerHTML = '跳转到';
li.appendChild(span1);
var input = document.createElement('input');
input.setAttribute("type","number");
input.onkeydown = function (e) {
var oEvent = e || event;
if (oEvent.keyCode == '13') {
var val = parseInt(oEvent.target.value);
if (typeof val === 'number' && val <= that.pageTotal) {
that.curPage = val;
that.getPage(that.curPage);
}else{
alert("跳转页数不能大于总页数 !")
}
that.init();
}
};
li.appendChild(input);
var span2 = document.createElement('span');
span2.innerHTML = '页';
li.appendChild(span2);
this.ul.appendChild(li);
},
//是否显示总页数,每页个数,数据
showPageTotal: function showPageTotal() {
var that = this;
var li = document.createElement('li');
li.innerHTML = '共 ' + that.pageTotal + ' 页';
li.className = 'totalPage';
this.ul.appendChild(li);
var li2 = document.createElement('li');
li2.innerHTML = '每页 ' + that.pageAmount + ' 条';
li2.className = 'totalPage';
this.ul.appendChild(li2);
var li3 = document.createElement('li');
li3.innerHTML = '合计 ' + that.dataTotal + ' 条数据';
li3.className = 'totalPage';
this.ul.appendChild(li3);
}
};pages.css:
.pagination {
padding:5px;
font-family: '微软雅黑',Arial,Verdana,arial,serif;
}
.pagination ul {
list-style: none;
padding-left: 0;
font-size: 0;
}
.pagination ul li {
padding: 0 10px;
vertical-align: bottom;
display: inline-block;
font-size: 14px;
min-width: 36px;
min-height: 28px;
line-height: 28px;
cursor: pointer;
box-sizing: border-box;
text-align: center;
margin-left: -1px;
color: #606266;
border: 1px solid #ebebeb;
height: 30px;
transition: all .3s;
}
.pagination ul li:hover {
color: #80bd01;
}
.pagination ul li.totalPage:hover {
color: #606266;
}
.pagination li.active {
color: #80bd01;
}
.pagination li.disabled {
cursor: not-allowed;
}
.pagination li.totalPage {
background: transparent;
cursor: default;
border: none;
padding: 0 6px;
}
.pagination li.totalPage:hover {
transform: none;
background-color: #ffffff;
}
.pagination li input {
-webkit-appearance: none;
background-color: #fff;
background-image: none;
border: 0;
border-bottom: 1px solid #dcdfe6;
box-sizing: border-box;
color: #606266;
display: inline-block;
font-size: inherit;
outline: none;
padding: 3px 5px;
transition: border-color .2s;
width: 40px;
height: 25px;
margin: 0 6px;
}
.pagination li input:focus{
border-color: #80bd01;
}
.pagination{
user-select: none;
}
.pagination ul:nth-child(2){
border-radius: 6px;
}
input[type=number] {
-moz-appearance:textfield;
}
input[type=number]::-webkit-inner-spin-button,
input[type=number]::-webkit-outer-spin-button {
-webkit-appearance: none;
margin: 0;
}
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