javascript - 为什么 ng-model 不检查默认单选按钮？

Question

下面是我正在工作的 fiddle :

http://jsfiddle.net/3c0dxf4d/

ng-model 有一个对象，ng-value 映射到对象，为什么我的默认值是 {"id":1,"name ":"比尔"} 默认情况下未选择。

Answer 1

看看这个 fiddle http://jsfiddle.net/roz98eda/

var app = angular.module("app", []);

app.controller("ctrl", function($scope) {
  $scope.customers = [{
    "id": 1,
    "name": "Bill"
  }, {
    "id": 2,
    "name": "Bob"
  }, {
    "id": 3,
    "name": "Biff"
  }];
  $scope.customer = {};
  $scope.currentCustomer = {
    "id": 1
  };

})

<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.23/angular.min.js"></script>
<div ng-app="app">
  <div ng-controller="ctrl">
    <table>
      <tr ng-repeat="theCustomer in customers">
        <td>
          <input type="radio" ng-model="$parent.currentCustomer.id" ng-value="theCustomer.id">{{theCustomer.name}}</td>
      </tr>
    </table>
    <br>
    <div>{{currentCustomer}}</div>
  </div>
</div>