Question

我试图使用AngularJS（1.2）指令在HTML表格中创建行单元格，我不明白为什么Angular会将指令结果作为＆＃39; body＆＃39的第一个孩子插入;而不是替换原始的指令元素？

以下是HTML标记：

  <body ng-app="myApp" ng-controller="MainCtrl">
    <table>
      <thead>
        <tr>
          <th>col1</th>
          <th>col2</th>
          <th>col3</th>
          <th>col4</th>
        </tr>
      </thead>
      <tbody>
        <my-directive></my-directive>
      </tbody>
    </table>
  </body>

指令：

var app = angular.module('myApp', []);

app.controller('MainCtrl', function($scope) {
  $scope.data = ['value1','value2','value3','value4'];
});

app.directive('myDirective', function () {
    return {
        restrict: "E",
        replace: true,
        scope:false,
        link: function (scope, element) {
            var html = angular.element('<tr></tr>');
            angular.forEach(scope.data, function(value, index) {
                html.append('<td>'+value+'</td>');
            });
            element.replaceWith(html);
        }            
    };
});

请使用下面的Plunker链接查看结果： http://plnkr.co/edit/zc00RIUHWNYW36lY5rgv?p=preview

Answer 1

如果你不将指令限制为一个元素，它似乎会更好：

app.directive('myDirective', function () {
    return {
        restrict: "A",
        replace: true,
        scope:false,
        link: function (scope, element) {
            var html = angular.element('<tr></tr>');
            angular.forEach(scope.data, function(value, index) {
                html.append('<td>'+value+'</td>');
            });
            element.replaceWith(html);
        }            
    };
});

<table>
  <thead>
    <tr>
      <th>col1</th>
      <th>col2</th>
      <th>col3</th>
      <th>col4</th>
    </tr>
  </thead>
  <tbody>
    <tr my-directive></tr>
  </tbody>
</table>

Angular指令在HTML表格中无法正常工作

1 个答案: