AngularJS ng-click stopPropagation

ngClick 指令（以及所有其他事件指令）创建在同一范围内可用的 $event 变量。此变量是对 JS event 对象的引用，可用于调用 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

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Stewie 回答的补充。如果您的回调决定是否应该停止传播，我发现将 $event 对象传递给回调很有用：

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

然后在回调本身中，您可以决定是否应该停止事件的传播：

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

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我写了一个指令，可以让你限制点击有效的区域。它可以用于像这样的某些场景，因此您不必逐个处理点击，您只需说“点击不会来自这个元素”。

你会像这样使用它：

<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>

请记住，这将阻止对最后一个单元格的所有点击，而不仅仅是按钮。如果这不是您想要的，您可能需要像这样包装按钮：

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

这是指令的代码：

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

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如果您使用像我这样的指令，当您需要两种数据方式绑定时，例如在更新任何模型或集合中的属性之后，它就是这样工作的：

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')
        });
      });
    }
  }
}

现在，您可以轻松地在任何按钮、链接、div 等中使用它，如下所示：

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

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<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;
      }
   };

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