AngularJs directives - how to get attributes values from within directive

angularjs

Solution

Use `$observe`:

Observing interpolated attributes: Use `$observe` to observe the value changes of attributes that contain interpolation (e.g. `src="{{bar}}"`). Not only is this very efficient but it's also the only way to easily get the actual value because during the linking phase the interpolation hasn't been evaluated yet and so the value is at this time set to `undefined`. -- directives doc

return function(scope, element, attrs) {
    attrs.$observe('key', function(value) {
        console.log('key=', value);
    });
}

As @FMM mentioned in a comment, `data` is stripped by Angular when it normalizes the attribute name, hence the use of `key` above, rather than `dataKey`.

Problem

Any idea how to access attributes values from inside the directive? ``` angular.module('portal.directives', []) .directive('languageFlag', ['$routeParams', function(params) { return function(scope, element, attrs) { console.log(attrs["data-key"]); // returns undefined console.log(element.attr('data-key')); // returns {{data-key}} angular.element(element).css('border', '1px solid red'); }; }]); ``` Html code is: ``` <ul> <li ng-repeat="lng in flags"> <a class="lngFlag {{flag.Key}}" data-key="{{flag.Key}}" data-id="{{lng.Id}}" ng-click="changeLangHash({'lng':lng.Id })" language-flag></a> </li> </ul> ``` Thanks

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