Creating multiple Angular directives through iteration

Question

Creating multiple Angular directives through iteration

Is there a more efficient way to define multiple Angular directives without repeating the same code over and over again? I have numerous directives that share similar structures, such as:

app.directive('note', function () {
    return {
        restrict: 'E',
        transclude: true,
        template: '<div class="note"></div>'
    }
});

Instead of manually writing out each directive, like note, introduction, thing, is there a method to loop through an array of names and create them in a more concise manner?

javascript angularjs angularjs-directive

Answer 1

Answer №1

In my opinion, it would be better to pass the value into the directive instead of taking this approach. However, if you are determined to go ahead with it, it does seem to work fine: check it out on Fiddle.

Here is the HTML code snippet:

<div ng-app="myApp">

    <div ng-controller="MyCtrl">
        Hello, {{name}}!
    </div>
    <introduction> </introduction>
    <note></note>
    <thing></thing>
    <notAThing></notAThing>
</div>

And here is the JavaScript part:

var myApp = angular.module('myApp',[]);

var dirs = ['note', 'introduction', 'thing'];

angular.forEach(dirs, function(dir) {
    myApp.directive(dir, function() {
        return {
            restrict: 'E',
            transclude: true,
            template: '<div class="' + dir + '">something</div>'
        }
    });
});

Answer 2

In my opinion, it would be better to pass the value into the directive instead of taking this approach. However, if you are determined to go ahead with it, it does seem to work fine: check it out on Fiddle.

Here is the HTML code snippet:

<div ng-app="myApp">

    <div ng-controller="MyCtrl">
        Hello, {{name}}!
    </div>
    <introduction> </introduction>
    <note></note>
    <thing></thing>
    <notAThing></notAThing>
</div>

And here is the JavaScript part:

var myApp = angular.module('myApp',[]);

var dirs = ['note', 'introduction', 'thing'];

angular.forEach(dirs, function(dir) {
    myApp.directive(dir, function() {
        return {
            restrict: 'E',
            transclude: true,
            template: '<div class="' + dir + '">something</div>'
        }
    });
});

Answer 3

Answer №2

As a beginner in this field, I have to admit that I don't see any major issue with the following code snippet if one is familiar with it:

(function() {
  var createDirective, module, pluginName, _i, _len, _ref;

  module = angular.module('FacebookPluginDirectives', []);

  createDirective = function(name) {
    return module.directive(name, function() {
      return {
        restrict: 'C',
        link: function(scope, element, attributes) {
          return typeof FB !== "undefined" && FB !== null ? FB.XFBML.parse(element.parent()[0]) : void 0;
        }
      };
    });
  };

  _ref = ['fbActivity', 'fbComments', 'fbFacepile', 'fbLike', 'fbLikeBox', 'fbLiveStream', 'fbLoginButton', 'fbName', 'fbProfilePic', 'fbRecommendations'];
  for (_i = 0, _len = _ref.length; _i < _len; _i++) {
    pluginName = _ref[_i];
    createDirective(pluginName);
  }

}).call(this);

^ Just to clarify, this code is not authored by me but rather something I stumbled upon and found effective. Essentially, if a class matches any of the values in the array, it triggers the Facebook JavaScript to parse the corresponding node/element.

Answer 4

As a beginner in this field, I have to admit that I don't see any major issue with the following code snippet if one is familiar with it:

(function() {
  var createDirective, module, pluginName, _i, _len, _ref;

  module = angular.module('FacebookPluginDirectives', []);

  createDirective = function(name) {
    return module.directive(name, function() {
      return {
        restrict: 'C',
        link: function(scope, element, attributes) {
          return typeof FB !== "undefined" && FB !== null ? FB.XFBML.parse(element.parent()[0]) : void 0;
        }
      };
    });
  };

  _ref = ['fbActivity', 'fbComments', 'fbFacepile', 'fbLike', 'fbLikeBox', 'fbLiveStream', 'fbLoginButton', 'fbName', 'fbProfilePic', 'fbRecommendations'];
  for (_i = 0, _len = _ref.length; _i < _len; _i++) {
    pluginName = _ref[_i];
    createDirective(pluginName);
  }

}).call(this);

^ Just to clarify, this code is not authored by me but rather something I stumbled upon and found effective. Essentially, if a class matches any of the values in the array, it triggers the Facebook JavaScript to parse the corresponding node/element.

Creating multiple Angular directives through iteration

Answer №1

Answer №2

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