请注意这个例子:
<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,但在选择一个值后,它会更改为string,而true不等于'true'。有什么方法可以让角度保留原始类型。
此时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?。
答案 0 :(得分:17)
使用ng-value
和angular将处理转换回布尔值:
强制性代码:
<div ng-controller="myCtrl">
<h1>Sample 1- Booleans</h1>
var ng-model = {{myValue}} - {{myType}}
<br />
<input type="radio" ng-value="true" name="boolean" ng-change="logIt()" ng-model="myValue" /> True
<input type="radio" ng-value="false" name="boolean" ng-change="logIt()" ng-model="myValue" /> False
</div>