Angular JS：input [radio]不起作用

ng-repeat创建新作用域，因此您应该确定父作用域。

有关更多信息，请参见https://docs.angularjs.org/api/ng/directive/ngRepeat

var app = angular.module('app', []);    app.controller('TestController', function ($scope) {        $scope.array = [{ name: 'lee', seq: 1,        }, { name: 'tom', seq: 2,        }, { name: 'jack', seq: 3,        }];        $scope.selected = $scope.array[0].name;    });<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.23/angular.min.js"></script><div ng-app="app" ng-controller="TestController">  <div ng-repeat="item in array">     <input type="radio" ng-model="$parent.selected"    ng-value="item.name" >  </div></div>