AngularJs | ng-click 不触发

AngularJs | ng-click not firing

我看不出 ng-click 不起作用的明显原因,但是当单击它绑定到的元素时它不会触发。

将呈现两个元素。每个 div 的右上角都有一个 X 图标,它应该触发 deletePreview。这将导致当前删除 linkPreviews 的第一项。例如,当通过 $timeout 调用此方法时,它会按预期工作。但是,尝试单击该图标无效。

我很高兴有任何想法。

(function (angular) {
  'use strict';

  angular
    .module('commons.ui')
    .directive('linkPreview', linkPreview)
    .controller('LinkPreviewController', LinkPreviewController);

  function linkPreview() {
    return {
      restrict: 'E',
      replace: true,
      templateUrl: 'link-preview/link-preview.html',
      scope: {},
      require: 'ngModel',
      bindToController: {
        focusVar: '=?',
        placement: '@'
      },
      controller: 'LinkPreviewController',
      controllerAs: '$ctrl'
    };
  }

  function LinkPreviewController($log, $timeout) {
    var vm = this;
    vm.deletePreview = deletePreview;

    vm.linkPreviews = [
      {
        image: {
          fileId: 'f616157b-223d-46ff-ba87-c16d10e83ed6',
          senderId: '1ae6f889-f27e-4466-a0a9-021923704097'
        },
        title: 'Title',
        description: 'This is an integrated platform for your official company news, social collaboration and team messaging.',
        url: 'http://www.sample.com/en/tour',
        tld: 'sample.com'
      },
      {
        image: '',
        title: 'Hacker News',
        description: 'News for the technically interested',
        url: 'https://news.ycombinator.com/',
        tld: 'news.ycombinator.com'
      }
    ];

    function deletePreview() {
      $log.info('should be deleted');
      vm.linkPreviews.splice(0, 1);
    }
  }
})(angular);
<div ng-repeat="linkPreview in $ctrl.linkPreviews">
    <div class="link-preview">
        <div class="link-preview-delete pull-right">
            <div class="link-preview-delete pull-right">
                <span class="link-preview-delete-button" ng-click="$ctrl.deletePreview()">
                    <i class="zmdi zmdi-close img-close"></i>
                </span>
            </div>
        </div>
        ..
     </div>
</div>

你在控制器中的函数声明错误。

要使用来自控制器的功能,您需要将其设置为

this.deletePreview

$scope.deletePreview

(在后一种情况下,您不必在 ng-click 视图中编写 $ctrl。记得注入 $scope!)。

您需要将 empty dependency 添加到您的模块中,例如:

 angular.module('commons.ui', [])

并且,必须在 HTML 中使用 controller as 语法(如果未使用),例如:

ng-controller="LinkPreviewController as $ctrl"

工作演示:

angular
  .module('commons.ui', [])
  .directive('coyoLinkPreview', linkPreview)
  .controller('LinkPreviewController', LinkPreviewController);

function linkPreview() {
  return {
    restrict: 'E',
    replace: true,
    templateUrl: 'app/commons/ui/components/link-preview/link-preview.html',
    scope: {},
    require: 'ngModel',
    bindToController: {
      focusVar: '=?',
      placement: '@'
    },
    controller: 'LinkPreviewController',
    controllerAs: '$ctrl'
  };
}

function LinkPreviewController($log, $timeout) {
  var vm = this;
  vm.deletePreview = deletePreview;

  vm.linkPreviews = [{
    image: {
      fileId: 'f616157b-223d-46ff-ba87-c16d10e83ed6',
      senderId: '1ae6f889-f27e-4466-a0a9-021923704097'
    },
    title: 'Go COYO',
    description: 'COYO is an integrated platform for your official company news, social collaboration and team messaging.',
    url: 'http://www.coyoapp.com/en/tour',
    tld: 'coyoapp.com'
  }, {
    image: '',
    title: 'Hacker News',
    description: 'News for the technically interested',
    url: 'https://news.ycombinator.com/',
    tld: 'news.ycombinator.com'
  }];

  function deletePreview() {
    console.log('clicked');
    $log.info('should be deleted');
    vm.linkPreviews.splice(0, 1);
  }
}
<script src="https://code.angularjs.org/1.5.2/angular.js"></script>
<div ng-app="commons.ui" ng-controller="LinkPreviewController as $ctrl">
  <div ng-repeat="linkPreview in $ctrl.linkPreviews">
    <div class="link-preview">
      <div class="link-preview-delete pull-right">
        <div class="link-preview-delete pull-right">
          <span class="link-preview-delete-button" ng-click="$ctrl.deletePreview()">
                    <i class="zmdi zmdi-close img-close">spanToClick</i>
                </span>
        </div>
      </div>
    </div>
  </div>
</div>

更新:

在您的指令中,您使用的是 scope:{},它会创建 isolated scope,因此您的代码不起作用。

现在进一步 ng-repeat 创建 new child scope,所以你的 div gets repeatedng-repeat 的内部逻辑(如删除点击)在 new child scope 下,所以它不会'没用。

如果你这样做 $parent.$ctrl 那么它将指向父级并且会起作用。

看到这个plunker

总的来说,最简单的解决方法是从指令中删除独立作用域。 scope: {}

我猜这是 AngularJS 中的错误?或者我确实用错了。

在我的示例中,指令的顶部 html 元素是 <div ng-repeat="linkPreview in $ctrl.linkPreviews">,这意味着多个 div 将被添加到同一层级。

将它包装在另一个 div 中时,正如@anoop 的示例所示,它会突然起作用。我还不明白的是,为什么 vm.linkPreviews 的数组总是附加到控制器上,而函数 vm.deletePreviews 只有在包裹在一个顶部 div 中时才会起作用。

工作HTML代码:

<div>
    <div ng-repeat="linkPreview in $ctrl.linkPreviews">
        <div class="link-preview">
            <div class="link-preview-delete pull-right">
            <span class="link-preview-delete-button" ng-click="$ctrl.deletePreview()">
              <i class="zmdi zmdi-close img-close"></i>
            </span>
            </div>
            <div class="link-preview-image-wrapper">
                <div class="link-preview-image">
                    <coyo-image-reference ng-if="linkPreview.image"
                                          file-id="::linkPreview.image.fileId"
                                          sender-id="::linkPreview.image.senderId"
                                          size-definitions="{'default': 'S', 'screen-lg': 'S'}"></coyo-image-reference>
                    <div class="link-preview-icon" ng-if="!linkPreview.image">
                        <i class="zmdi zmdi-globe"></i>
                    </div>
                </div>
            </div>
            <div class="link-preview-text-wrapper">
                <div class="link-preview-line">
                    <span class="link-preview-title" ng-bind="::linkPreview.title"></span>
                </div>
                <div class="link-preview-line">
                    <span class="link-preview-description" ng-bind="::linkPreview.description"></span>
                </div>
                <div class="link-preview-line">
                <span class="link-preview-url">
                    <a href="{{ ::linkPreview.url }}" target="_blank">{{ ::linkPreview.tld }}</a>
                </span>
                </div>
            </div>
        </div>
    </div>
</div>