AngularJS ng-click stopPropagation

问题:

I have a click Event on a table row and in this row there is also a delete Button with a click Event. When i click the delete button the click Event on the row is also fired.

Here is my code.

<tbody>
  <tr ng-repeat=\"user in users\" class=\"repeat-animation\" ng-click=\"showUser(user, $index)\">
    <td>{{user.firstname}}</td>
    <td>{{user.lastname}}</td>
    <td>{{user.email}}</td>
    <td><button class=\"btn red btn-sm\" ng-click=\"deleteUser(user.id, $index)\">Delete</button></td>
  </tr>
</tbody>

How can I prevent that the showUser Event is fired when i click the delete Button in the table cell?

回答1:

ngClick directive (as well as all other event directives) creates $event variable which is available on same scope. This variable is a reference to JS event object and can be used to call stopPropagation():

<table>
  <tr ng-repeat=\"user in users\" ng-click=\"showUser(user)\">
    <td>{{user.firstname}}</td>
    <td>{{user.lastname}}</td>
    <td>
      <button class=\"btn\" ng-click=\"deleteUser(user.id, $index); $event.stopPropagation();\">
        Delete
      </button>
    </td>              
  </tr>
</table>

PLUNKER

回答2:

An addition to Stewie\'s answer. In case when your callback decides whether the propagation should be stopped or not, I found it useful to pass the $event object to the callback:

<div ng-click=\"parentHandler($event)\">
  <div ng-click=\"childHandler($event)\">
  </div>
</div>

And then in the callback itself, you can decide whether the propagation of the event should be stopped:

$scope.childHandler = function ($event) {
  if (wanna_stop_it()) {
    $event.stopPropagation();
  }
  ...
};

回答3:

I wrote a directive which lets you limit the areas where a click has effect. It could be used for certain scenarios like this one, so instead of having to deal with the click on a case by case basis you can just say \"clicks won\'t come out of this element\".

You would use it like this:

<table>
  <tr ng-repeat=\"user in users\" ng-click=\"showUser(user)\">
    <td>{{user.firstname}}</td>
    <td>{{user.lastname}}</td>
    <td isolate-click>
      <button class=\"btn\" ng-click=\"deleteUser(user.id, $index);\">
        Delete
      </button>
    </td>              
  </tr>
</table>

Keep in mind that this would prevent all clicks on the last cell, not just the button. If that\'s not what you want you may want to wrap the button like this:

<span isolate-click>
    <button class=\"btn\" ng-click=\"deleteUser(user.id, $index);\">
        Delete
    </button>
</span>

Here is the directive\'s code:

angular.module(\'awesome\', []).directive(\'isolateClick\', function() {
    return {
        link: function(scope, elem) {
            elem.on(\'click\', function(e){
                e.stopPropagation();
            });
        }
   };
});

回答4:

In case that you\'re using a directive like me this is how it works when you need the two data way binding for example after updating an attribute in any model or collection:

angular.module(\'yourApp\').directive(\'setSurveyInEditionMode\', setSurveyInEditionMode)

function setSurveyInEditionMode() {
  return {
    restrict: \'A\',
    link: function(scope, element, $attributes) {
      element.on(\'click\', function(event){
        event.stopPropagation();
        // In order to work with stopPropagation and two data way binding
        // if you don\'t use scope.$apply in my case the model is not updated in the view when I click on the element that has my directive
        scope.$apply(function () {
          scope.mySurvey.inEditionMode = true;
          console.log(\'inside the directive\')
        });
      });
    }
  }
}

Now, you can easily use it in any button, link, div, etc. like so:

<button set-survey-in-edition-mode >Edit survey</button>

回答5:

<ul class=\"col col-double clearfix\">
 <li class=\"col__item\" ng-repeat=\"location in searchLocations\">
   <label>
    <input type=\"checkbox\" ng-click=\"onLocationSelectionClicked($event)\" checklist-model=\"selectedAuctions.locations\" checklist-value=\"location.code\" checklist-change=\"auctionSelectionChanged()\" id=\"{{location.code}}\"> {{location.displayName}}
   </label>



$scope.onLocationSelectionClicked = function($event) {
      if($scope.limitSelectionCountTo &&         $scope.selectedAuctions.locations.length == $scope.limitSelectionCountTo) {
         $event.currentTarget.checked=false;
      }
   };