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                <html lang="en">
  <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>h5 router</title>
    <li><a href="/">/</a></li>
    <li><a href="/page1">page1</a></li>
    <li><a href="/page2">page2</a></li>
  <div class='content-div'></div>
  <script src='./router-history-test1.js'></script>





                class RouterClass {
  constructor(path) {
    this.routes = {}        // 记录路径标识符对应的cb
    history.replaceState({ path }, null, path)
    this.routes[path] && this.routes[path]()
    window.addEventListener('popstate', e => {
      console.log(e, ' --- e')
      const path = e.state && e.state.path
      this.routes[path] && this.routes[path]()
   * 初始化
  static init() {
    window.Router = new RouterClass(location.pathname)
   * 记录path对应cb
   * @param path 路径
   * @param cb 回调
  route(path, cb) {
    this.routes[path] = cb || function() {}
   * 触发路由对应回调
   * @param path
  go(path) {
    history.pushState({ path }, null, path)
    this.routes[path] && this.routes[path]()

const ul = document.querySelector('ul')
const ContentDom = document.querySelector('.content-div')
const changeContent = content => ContentDom.innerHTML = content

Router.route('/', () => changeContent('默认页面'))
Router.route('/page1', () => changeContent('page1页面'))
Router.route('/page2', () => changeContent('page2页面'))

ul.addEventListener('click', e => {
  if ( === 'A') {