<!DOCTYPE html><html ng-app="myApp"><head> <meta charset="UTF-8"> <title>AngularJS</title> <script src="https://cdn.static.runoob.com/libs/angular.js/1.4.6/angular.min.js"></script> <style> div{ border:1px solid black; } </style></head><body> <div ng-controller="childCtrl1"> <button ng-click="setPage()">换页</button> </div> <div ng-controller="childCtrl2"> <span>当前页:{{nowPage}}</span> </div></body><script type="text/javascript">var app = angular.module('myApp', []);app.factory('pageNum', function() { var page = { num:1 }; return page;});app.controller('childCtrl1', function($scope,pageNum) { $scope.setPage = function() { pageNum.num++; };});app.controller('childCtrl2', function($scope,pageNum) { $scope.nowPage=pageNum.num;});</script></html>在点击换页之后, childCtrl2里的nowPage为什么没有变？用怎么样修改factory才可以实现同步变化？
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