我正在学习AngularJS.我想打印出一个对象列表,并迭代一个对象的内部对象的属性.这看起来像是使用嵌套循环的标准过程,但是,它看起来并不那么简单.
var vehicleApp = angular.module("vehicleApp",[]); vehicleApp.controller('VehicleController',function ($scope) { $scope.vehicles = [{ id: 0,name: "car",parts: { wheels: 4,doors: 4 } },{ id: 1,name: "plane",parts: { wings: 2,doors: 2 } },{ id: 2,name: "boat",parts: { doors: 1 } }]; });
我想输出这样的车辆:
car - wheels (4) - doors (2) plane - wings (2) - doors (2) boat - doors (1)
我使用的模板是这样设置的:
<div ng-app="vehicleApp" ng-controller="VehicleController"> <p ng-repeat="vehicle in vehicles"> {{ vehicle.name }} </p> <ul> <li ng-repeat="(attribute,value) in vehicle.parts"> {{attribute}} ({{value}}) </li> </ul> </div>
有趣的是,当我使用{{vehicle.parts}}时,它会返回部件内部对象的JSON字符串. AngularJS是否将其视为字符串,因此无法打印出部件对象的属性?
解决方法
你没有在第一个中包含第二个ngRepeat:
<div ng-app="vehicleApp" ng-controller="VehicleController"> <p ng-repeat="vehicle in vehicles"> {{ vehicle.name }} <ul> <li ng-repeat="(attribute,value) in vehicle.parts"> {{attribute}} ({{value}}) </li> </ul> </p> </div>