使用 Angular 观察工厂变量 [英] watch factory variable with Angular
问题描述
我的单页应用程序有 2 个控制器:第一个用于主菜单,第二个用于视图.他们与这家工厂共享数据
My single page application has 2 controllers : the first is for my main menu and the second is for the view. They share data with this factory
myApp.factory('MenuFactory', function(){
var factory = {
Monitor: "doneJob",
Control: "",
Report: "",
Display: "",
setMonitor: function(value){
factory.Monitor = value;
},
setControl: function(value){
factory.Control = value;
},
setReport: function(value){
factory.Report = value;
},
setDisplay: function(value){
factory.Display = value;
}
};
return factory;
});
我想查看 factory.Control
上的更改,但我无法使其正常工作.
I would like to watch change on factory.Control
, but i can't make it works.
当我尝试这个时:
$scope.$watch(function(){MenuFactory.Control}, function(NewValue, OldValue){
console.log(NewValue + ' ' + OldValue);
console.log(MenuFactory.Control);
}, true);
我在控制台中得到undefined undefined"和Process".这个工厂的 $watch 实现有什么问题吗?
I get "undefined undefined" and "Process" in console. Is there any problem with my $watch implementation for this factory ?
推荐答案
您的语法有误.它应该返回
服务变量MenuFactory.Control
&最后也不需要 true
,因为您没有对象来检查对象相等性.
You had a wrong syntax. It should return
the service variable MenuFactory.Control
& also there is no need of true
in the end as you don't have object to check object equality.
代码
$scope.$watch(function(){
return MenuFactory.Control;
}, function(newValue, oldValue){
console.log(newValue + ' ' + oldValue);
console.log(MenuFactory.Control);
});
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