$element.append() 嵌入时不追加

Question

据我了解，下面的代码应该将段落渲染三次，每次都使用不同的索引值。相反，它只渲染最后的嵌入。这是怎么回事？

const app = angular.module('app', [])
app.component('test', {
  transclude: true,
  controller: function($scope, $element, $transclude) {
    //The transclusion should appear 3 times right? Since we're appending 3 times?
    for(let index of [10, 11, 12]) {
      const x = $transclude(Object.assign($scope.$new(true), {index}))
      $element.append(x)
    }
  },
});
angular.bootstrap (document.querySelector('body'), ['app'])

<body>
  <test>
    <p>This is {{index}}</p>
  </test>
  <script src="https://code.angularjs.org/1.5.8/angular.js"></script>
</body>

Answer 1

$transcludeFn 接受第二个参数，该参数接收应用了新范围的元素的克隆。你想在这个函数中使用克隆来放入dom。您可以在这里阅读更多相关信息：http://ng.malsup.com/#!/transclude-function or here: https://docs.angularjs.org/api/ng/service/$compile#-controller-

const app = angular.module('app', [])
app.component('test', {
  transclude: true,
  controller: function($scope, $element, $transclude) {
    //The transclusion should appear 3 times right? Since we're appending 3 times?
    for(let index of [10, 11, 12]) {
      $transclude(
        Object.assign($scope.$new(true), {index}),
        x => $element.append(x)
      )
    }
  },
});
angular.bootstrap (document.querySelector('body'), ['app'])

<body>
  <test>
    <p>This is {{index}}</p>
  </test>
  <script src="https://code.angularjs.org/1.5.8/angular.js"></script>
</body>

$element.append() 嵌入时不追加

$element.append() not appending when transcluded

angularjs

directive

angularjs-ng-transclude