A bit. The world of AngularJS is still seems complicated for some quite
trivial tasks :-)
вторник, 11 марта 2014 г., 20:55:59 UTC+4 пользователь Kamal написал:
>
> Denis,
>
> Its because $watch is only executed when there is a change in value for
> the give variable to watch, in this case the ng-init gets executed after
> the controller (by that time your log of x is already executed) where the
> value is change there by you see myData as `world`. Simply put `x` and
> `$scope.myData` are two different variables where `x` is being updated to
> `$scope.myData` on in case of value change of `myData` using the $watch
> which is invoked after the controller is initialized by the time your log
> for x is executed it still undefined as `$scope.myData` is not yet
> defined/change this happens after when the ng-init is executed. As far as
> my understanding goes the controller is executed (to initialize the
> necessary scope) first and later the directive (in this case ng-init). I
> hope this clarifies it a bit.
>
> On Tuesday, 11 March 2014 22:06:05 UTC+5:30, Denis Ipatov wrote:
>>
>> I made another experimet in code:
>>
>> var app = angular.module("app", []);
>>
>> app.controller("appCtrl", function ($scope) {
>> var x;
>> $scope.$watch('myData', function () {
>> if ($scope.myData) {
>> //here here you can handle your data
>> x = $scope.myData;
>> console.log('myData:', $scope.myData);
>> }
>> });
>> console.log('my x:', x);
>>
>> Result is undefined. Why?
>>
>> my x: undefined app.js:12 <http://localhost:7007/Scripts/app.js>
>> myData: world
>>
>>
>> Hi Denis,
>>>
>>> No that's not the only way, but it's an easy way to get started,
>>> What do you know already of angular?
>>> you already know something about modules and dependency injection ?
>>>
>>> here is another plunk,
>>> http://plnkr.co/edit/eauguSJOoATrATATwn6E?p=preview
>>> if you have questions about it, don't hesitate to ask!
>>>
>>> Regards
>>> Sander
>>>
>>>
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