JSFiddle Sample

<div ng-controller="myCtrl">
    var ng-model = {{myValue}} - {{myType}}
 
       <input type="radio" value="true" 
    name="boolean" ng-change="logIt()" ng-model="myValue" /> True
        <input type="radio" value="false" 
    name="boolean" ng-change="logIt()" ng-model="myValue" /> False
 
    </div>
    var myApp = angular.module('myApp',[]);
 
    function myCtrl($scope)
    {    
        $scope.myValue = true; //does not work
        //$scope.myValue = 'true'; //it does work
        $scope.myType =(typeof $scope.myValue);    
        $scope.logIt=function(){
            $scope.myType =(typeof $scope.myValue);
        }
    }

正如您所看到的,最初typeof的类型为boolean,但在选择值后,它将更改为string,而true不等于’true’.有什么方法可以让角度保留原始类型.

在这一点上,我正在考虑编写自己的指令来控制这种行为,但是看起来角度改变原始类型并不正确,我是否正确？