原生js实现分页效果
本文实例为大家分享了js实现分页效果的具体代码，供大家参考，具体内容如下
效果如下：
代码：
<!DOCTYPE html><html lang='en'><head> <meta charset='UTF-8'> <meta name='viewport' content='width=device-width, initial-scale=1.0'> <meta http-equiv='X-UA-Compatible' content='ie=edge'> <title>Document</title> <style type='text/css'> </style></head><body> <div id='page-nation'></div> <script src='https://www.haobala.com/bcjs/page.js'></script> <script> //分页调用方法 const Api=new pageNation({ el:'#page-nation',//分页器位置 page:1,//当前页 size:5,//默认5,10,15,20 total:100,//数据总条数 styUrl: ’./page.css’,//样式地址（可修改） IsShowBtn: {//设置需要显示的按钮 choosePageSize: true,//是否显示下拉选项 IsShowPrevOrNextBtn: true,//是否显示上一页下一页按钮 IsShowEnterBtn: true,//是否显示跳转输入 IsShowTotalPage:true,//是否显示总页数 }, callback:function(page,size,total){ console.log(page,size,total); //此处为ajax请求 } }); </script> </body></html>
page.js
var pageNation;pageNation = (function () { function extend(target, source) { for (var obj in source) { target[obj] = source[obj]; } return target; } function pageNation(options) { var defaultOptions = { el: 'body',//分页父容器 page: 1, size: 10, total: 0, styUrl: ’style.css’, callback: null, IsShowBtn: {//设置需要显示的按钮 choosePageSize: true,//是否显示下拉选项 IsShowPrevOrNextBtn: true,//否显示上一页下一页按钮 IsShowEnterBtn: true,//是否显示跳转输入 IsShowTotalPage:true,//是否显示总页数 } }; this.options = extend(defaultOptions, options) || {}; this.options.el = document.querySelectorAll(this.options.el)[0]; this.pageT = Math.ceil(this.options.total / this.options.size); this.init(); if (!document.querySelector('#dynamic-style')) { this.pageStyle(); } //this.options.callback(1,self.options.size,self.options.total); } var proto = pageNation.prototype || {}; proto.rander = function (page, size, total) { this.options.page = !!page ? page : 1; this.options.size = !!size ? size : 10; this.options.total = !!total ? total : 0;// this.pageT = Math.ceil(this.options.total / this.options.size); this.init(); this.page_nation = null; }; proto.init = function () { var self = this; var pageNum = function (page) {//创建分页器 return (function () { let ol = document.createElement('ol'); ol.classList.add('page-ol'); let p = !!page ? page : 1; let tPage = Math.ceil(self.options.total / self.options.size); let s = p <= 3 ? 1 : p > (tPage - 3) ? tPage - 4 : p - 2; s=s==0?1:s; for (let i = s; i < (s + 5); i++) { if (i > tPage) { break; } let li = document.createElement('li'); li.innerText = i; if (i == p) { li.classList.add('hover'); } ol.appendChild(li); } return ol; })(page); }; var sizeNum = function (size) {//重置size return (function () { let select = document.createElement('select'); select.setAttribute('class', 'page-Select'); let s = !!size ? size : 10; //let tPage=Math.ceil(self.options.total/self.options.size); for (let i = 5; i <= (5 * 4); i += 5) { let option = document.createElement('option'); option.value = i; option.innerText = i; if (i === self.options.size) { option.setAttribute('selected', 'selected'); } select.appendChild(option); } return select; })(size); }; var prevBtn = function () {//上一页按钮 return (function () { let button = document.createElement('span'); button.setAttribute('class', 'prev-btn'); button.innerText = '上一页'; if (self.options.page == 1) { button.classList.add('disabled') }; return button; })(); }; var nextBtn = function () {//下一页按钮 return (function () { let button = document.createElement('span'); button.setAttribute('class', 'next-btn'); button.innerText = '下一页'; if (self.options.page == self.pageT) { button.classList.add('disabled') } ; return button; })(); }; var pageMark = function () {//页码标识 return (function () { let span = document.createElement('span'); span.setAttribute('class', 'pageMark'); span.innerHTML = '<strong>' + self.options.page + '</strong> / <strong>' + Math.ceil(self.options.total / self.options.size) + '</strong>'; return span; })(); }; var enterBtn = function () {//跳转按钮 return (function () { let button = document.createElement('span'); button.setAttribute('class', 'enter-btn'); let ipt = document.createElement('input'); ipt.value = self.options.page; ipt.setAttribute('type', 'text'); let b = document.createElement('span'); b.setAttribute('class', 'enterBtn'); b.innerText = '跳转'; button.appendChild(ipt); button.appendChild(b); return button; })(); }; let page_nation = self.options.el.querySelector('.page-nation'); if (page_nation != null && page_nation != 'undefind') { page_nation.innerHTML = ''; } else { page_nation = document.createElement('div'); page_nation.classList.add('page-nation'); self.options.el.appendChild(page_nation); } page_nation.appendChild(new pageNum(self.options.page)); self.options.IsShowBtn.choosePageSize&&page_nation.appendChild(new sizeNum(self.options.size)); self.options.IsShowBtn.IsShowPrevOrNextBtn&&page_nation.appendChild(new prevBtn()); self.options.IsShowBtn.IsShowPrevOrNextBtn&&page_nation.appendChild(new nextBtn()); page_nation.appendChild(new pageMark()); self.options.IsShowBtn.IsShowEnterBtn&&page_nation.appendChild(new enterBtn()); self.page_nation = document.querySelector('.page-nation'); this.switchPage(self.options.callback); this.switchSize(self.options.callback); return self; }; proto.pageStyle = function () { let headDoc = document.querySelector('head'); var linkTag = document.createElement('link'); var cssURL = this.options.styUrl; linkTag.id = ’dynamic-style’; linkTag.href = cssURL; linkTag.setAttribute(’rel’, ’stylesheet’); linkTag.setAttribute(’media’, ’all’); linkTag.setAttribute(’type’, ’text/css’); headDoc.appendChild(linkTag); }; proto.switchPage = function (fun) { let self = this; let lis = this.page_nation.children[0].children; for (let i = 0, len = lis.length; i < len; i++) { lis[i].onclick = function () { self.options.page = this.innerText; self.rander(self.options.page, self.options.size, self.options.total); }; } this.options.el.querySelectorAll('.prev-btn')[0].onclick = function (e) { //console.time('rr'); self.options.page = --self.options.page; self.rander(self.options.page, self.options.size, self.options.total); //console.timeEnd('rr'); }; this.options.el.querySelectorAll('.next-btn')[0].onclick = function (e) { self.options.page = ++self.options.page; self.rander(self.options.page, self.options.size, self.options.total); }; this.options.el.querySelectorAll('.enterBtn')[0].onclick = function (e) { let val = this.previousElementSibling.value; if (!val || val > self.pageT || val < 1) { alert('参数超出范围！'); return false; } else { self.options.page = val; self.rander(self.options.page, self.options.size, self.options.total); } }; fun(self.options.page, self.options.size, self.options.total); }; proto.switchSize = function (fun) { let self = this; let lis = this.page_nation.children[1]; lis.onchange = function () { self.options.size = Number(this.value); self.rander(1, self.options.size, self.options.total); fun(1, self.options.size, self.options.total); } }; return pageNation;})();
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持好吧啦网。
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