You need to use $observe to watch DOM attributes who's values contain
interpolation.
<span title="Hello {{name}}">blah</span>
attrs.$observe('title', function() {
...
});
$watch can not be used for string expressions that contain interpolation.
http://ng.malsup.com/#!/$watch-vs-$observe
On Fri, Jan 31, 2014 at 9:16 AM, LLoydsensei <[email protected]> wrote:
> Hi guys.
>
> API documentation (
> http://docs.angularjs.org/api/ng.$compile#description_comprehensive-directive-api_attributes)
> says "[...] during the linking phase the interpolation hasn't been
> evaluated yet and so the value is at this time set to undefined."
>
> 1) I cannot understand why someone would use attrs.$observe() instead of
> $scope.$watch(), since both appear to work the same way
> 2) I don't understand why the documentation talks about the interpolation
> being undefined during the linking phase when this
> http://jsfiddle.net/3Vh43/1/ proves the contrary
>
> Did I happen to stumble upon a particular case in my jsfiddle where it
> works or is the documentation wrong there?
>
> Regards,
> LLoyd
>
> PS: Wiki says the same (
> https://github.com/angular/angular.js/wiki/Understanding-Scopes#-directives
> )
> PPS: Tested on angular 1.1.5 and 1.2.10
>
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