angularjs - 如何取消 ngEvent？

Question

随着 AngularJS 1.2.0-rc.3 的发布，我在搞乱ngCut、ngCopy和ngPaste，但我无法取消它们。我认为规范不允许这样做，但确实如此。它必须是可能的......通过搜索也无法真正找到任何东西（只是取消传播）。有任何想法吗？

http://jsfiddle.net/XEEpv/

Answer 1

Not sure what you mean exactly by "cancel event" but what you can do with events is:

• preventDefault() so the default action that this event is normally triggering doesn't take place
• stopPropagation() so the event doesn't buble up in the DOM herarchy

I presume that you wanted to cancel default action, that is, call preventDefault() on the event:

$scope.cut = function ($event) {
    console.log('cut', $event);
    $event.preventDefault();
}

jsFiddle here: http://jsfiddle.net/M5jRW/

Answer 2

You can set $event.returnValue to false:

function x($scope) {
    $scope.cut = function ($event) {
        $event.returnValue = false;
        console.log('cut', $event);
    }
    $scope.kp = function ($event) {
        console.log('keypress', $event);
        return false;
    }
}

Here's your updated fiddle: http://jsfiddle.net/XEEpv/1/