Preventing parent click events in AngularJS when clicking on a child element: Tips and tricks

I am facing an issue with a <div> that has a ng-click directive, but this <div> contains a child element also with a ng-click directive. The problem arises when the click event on the child element also triggers the click event of the parent element.

Is there a way to prevent the parent click event from firing when the child is clicked?

Here is a jsfiddle link to better illustrate my situation.

Thank you in advance for any help provided.

EDIT

Below is the code snippet:

<body ng-app ng-controller="TestController">
<div id="parent" ng-click="parentClick()">
    <div id="child" ng-click="childClick()"></div>

    <p ng-bind="elem"></p>
</div>

<div><p style="text-align:center" ng-bind="childElem"></p></div>
</body>

<script>
function TestController($scope) {
    $scope.parentClick = function() {
        $scope.elem = 'Parent';
    }

    var i = 1;
    $scope.childClick = function() {
        $scope.elem = 'Child';
        $scope.childElem = 'Child event triggered x' + i;
        i++;
    }
}
</script>

Answer №1

To prevent event bubbling, make use of the event.stopPropagation() method. For reference, visit: http://jsfiddle.net/qu86oxzc/3/

<div id="child" ng-click="childClick($event)"></div>

$scope.childClick = function($event) {
    $event.stopPropagation();
    ...
}

Answer №2

Implement event.stopPropagation to prevent the propagation of the event from child event handler up the DOM tree.

Check out the Updated Demo here

function TestController($scope) {
  $scope.parentClick = function() {

    $scope.elem = 'Parent';
  }

  var i = 1;
  $scope.childClick = function(e) {
    $scope.elem = 'Child';
    $scope.childElem = 'Child event triggered x' + i;
    i++;

    e.stopPropagation(); // Prevent event bubbling
  }
}
body {
  width: 100%;
  height: 100%;
  overflow: hidden;
}
#parent {
  width: 100px;
  height: 100px;
  position: relative;
  z-index: 1;
  margin: 10px auto 0 auto;
  background-color: #00acee;
  border-radius: 2px;
  cursor: pointer;
}
#parent:hover {
  opacity: 0.5;
}
#child {
  width: 20px;
  height: 20px;
  position: absolute;
  top: 10px;
  right: 10px;
  z-index: 2;
  background-color: #FFF;
  border-radius: 2px;
  cursor: pointer;
}
#child:hover {
  opacity: 0.5;
}
#parent p {
  width: 100%;
  position: absolute;
  bottom: 0px;
  text-align: center;
  color: #FFF;
}
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.0.1/angular.min.js"></script>

<body ng-app ng-controller="TestController">
  <div id="parent" ng-click="parentClick()">
    <div id="child" ng-click="childClick($event)"></div>
    <!--                                 ^^^^^^^     -->
    <p ng-bind="elem"></p>
  </div>
  <div>
    <p style="text-align:center" ng-bind="childElem"></p>
  </div>
</body>

Answer №3

you also have the option to utilize this method as it performs the same function.

<div id="child" ng-click="childClick();$event.stopPropagation();"></div>

Answer №4

Despite the beauty of Pieter Willaert's answer, I have made some updates to your fiddle by implementing a simple boolean check:

http://jsfiddle.net/qu86oxzc/6/

function UpdateController($scope) {
    $scope.boolean = false;
    $scope.parentClick = function () {
        if (!$scope.boolean) $scope.elem = 'Parent';
        $scope.toggleBoolean();
    }

    var count = 1;
    $scope.childClick = function () {
        $scope.boolean = true;
        $scope.elem = 'Child';
        $scope.childElem = 'Child event triggered x' + count;
        count++;
    }

    $scope.toggleBoolean = function () {
        $scope.boolean = !$scope.boolean;
    }
}

Answer №5

You might also want to consider using $event.stopPropagation(); placed after the child function call. This method functions similarly to a preventdefault.

<body ng-app ng-controller="TestController">
<div id="parent" ng-click="parentClick()">
    <div id="child" ng-click="childClick();$event.stopPropagation();"></div>

    <p ng-bind="elem"></p>
</div>

<div><p style="text-align:center" ng-bind="childElem"></p></div>
</body>

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