最近在开发项目的时候，发现了AngularJS一个很好玩的特性。我们知道AngularJS的scope存在父子关系，当我们通过scope.$apply()手动刷新子作用域的时候，父作用域也会被刷新；反过来也是如此。
<!doctype html> <html lang="en" ng-app> <head> <Meta charset="utf-8"> <title>ng-model</title> <script src="angular-1.2.25.js"></script> <script> var outerScope = null; var innerScope = null; function outerController($scope) { outerScope = $scope; outerScope.out = "out"; } function innerController($scope) { innerScope = $scope; innerScope.in = "in"; } function outerFunc() { innerScope.in = "parent"; outerScope.out = "parent"; // 刷新父scope outerScope.$apply(); } function innerFunc() { innerScope.in = "child"; outerScope.out = "child"; // 刷新子scope innerScope.$apply(); } </script> </head> <body ng-controller="outerController"> {{out}} <button onclick="outerFunc();">outerFunc</button> <div ng-controller="innerController"> {{in}} <button onclick="innerFunc();">innerFunc</button> </div> </body> </html>原文链接：https://www.f2er.com/angularjs/149496.html
