Angularjs：听来更改指令模拟 [英] Angularjs: Listen to model change in a directive

问题描述

我试图找出我怎么能听的时候模型是指令中更新。

I'm trying to find out how I can listen to when the model is updated within an directive.

eventEditor.directive('myAmount',function(){
    return {
        restrict: 'A',
        link: function(scope, elem, attrs) {
          scope.$watch(attr['ngModel'], function (v) {
            console.log('value changed, new value is: ' + v);
          });
        } 
      } 
    }
};

}）;

该指令是NG重复内称为

The directive is called within ng-repeat as

<div ng-repeat="ticket in tickets">
    <input my-amount ng-model="ticket.price"></input> 
</div>

很高兴的任何帮助。我不明白scope属性怎么看起来像一个NG重复之内。

Very happy for any help. I don't understand how the scope attribute looks like within an ng-repeat.

感谢。

推荐答案

http://jsbin.com/mihupo/1/edit

ATTRS 而不是 ATTR

app.directive('myAmount',function(){
    return {
        restrict: 'A',
        link: function(scope, elem, attrs) {
          scope.$watch(attrs['ngModel'], function (v) {
            console.log('value changed, new value is: ' + v);
          });
        } 
      } ;
    }
);

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