diff --git a/index.html b/index.html
index 005cf18..587e8cf 100644
--- a/index.html
+++ b/index.html
@@ -33,11 +33,7 @@ <h1>Welcome</h1>
             title: '首页'
         }, {
             id: 'next',
-            title: '下一页',
-            handler: function() {
-                console.log("切换到next");
-                console.log(this);
-            }
+            title: '下一页'
         }]
 
         //路由器
diff --git a/package.json b/package.json
index 54eb422..2de877f 100644
--- a/package.json
+++ b/package.json
@@ -15,6 +15,7 @@
   "author": "",
   "license": "ISC",
   "dependencies": {
+    "http-server": "^14.1.1",
     "jest": "^29.0.0",
     "jest-environment-jsdom": "^29.1.2"
   }
diff --git a/router.js b/router.js
index d8926ea..eb4a329 100644
--- a/router.js
+++ b/router.js
@@ -1,32 +1,62 @@
 function Router(routes, defaultRoute) {
   //TODO
+  this.init(routes, defaultRoute);
 }
 
 //初始化，可多次初始化
-Router.prototype.init = function(routes, defaultRoute) {
+Router.prototype.init = function (routes, defaultRoute) {
   //TODO
-  this.currentRoute
-  this.oldRoute
-}
+  this.routes = routes;
+  this.routeMap = {};
+  routes.forEach((currenValue) => {
+    this.routeMap[currenValue.id] = currenValue;
+  });
+  this.stack = [];
+  this.stackIndex = -1;
+  this.push(defaultRoute);
+};
 
 //切换路由
-Router.prototype.push = function(route, callback) {
-  //TODO
-}
+Router.prototype.push = function (route, callback) {
+  this.changePage(route);
+  history.pushState(this.currentRoute, this.currentRoute.title);
+  let res;
+  if (callback) {
+    try {
+      res = callback(this.currentRoute, this);
+    } catch (error) {
+      res = undefined;
+    }
+  }
+  return res;
+};
 
+Router.prototype.replace = function (route) {
+  this.changePage(route);
+  history.replaceState(this.currentRoute, this.currentRoute.title);
+}
 //前进
 Router.prototype.forward = function () {
   history.forward();
-}
+  this.stackIndex++;
+  this.currentRoute = this.stack[this.stackIndex];
+};
 
 //后退
 Router.prototype.back = function () {
   history.back();
-}
+  this.stackIndex--;
+  this.currentRoute = this.stack[this.stackIndex];
+};
 
 //切换页面：route为字符串，为空则隐藏所有路由
-Router.prototype.changePage = function(route) {
-  //TODO
-}
+Router.prototype.changePage = function (route) {
+  // TODO
+  const currentRoute = this.routeMap[route];
+  this.currentRoute = currentRoute;
+  this.stack.push(currentRoute);
+  this.stackIndex++;
+};
+
 
-module.exports = Router
\ No newline at end of file
+module.exports = Router;
\ No newline at end of file
diff --git a/test/index.spec.js b/test/index.spec.js
index 27b7c39..7408303 100644
--- a/test/index.spec.js
+++ b/test/index.spec.js
@@ -1,3 +1,5 @@
+const Router = require('../router');
+
 describe('初始化路由', () => {
   it('default route', () => {
     //路由表