为什么 angular.js 在添加动态元素时不够聪明，无法编译 DOM? [英] Why is angular.js not smart enough to compile DOM when adding dynamic elements?

问题描述

我真的很喜欢 AngularJS 如何通过允许您在应用程序中声明指令来启用自定义标签/元素，但是，当我动态附加自定义标签时，什么也没有发生:

I really like how AngularJS enables custom tags/elements by allowing you to declare directives inside your app, however, when I append a custom tag dynamically, nothing happens:

angular.module('myApp', []).directive('test', (($compile) ->
   restrict: 'E'
   link: (scope, element, attributes) ->
     $(element).html('<h1>this is a test!</h1>')
))

$('body').append('<test></test>')

如何动态构建自定义标签的实例?

How can I build an instance of my custom tag dynamically?

推荐答案

为什么要在 Angular 之外调用 jquery?例如，通常你会从一个角度指令内部做一些事情，并且可以访问 $compile.如果您绝对需要外部访问，您可以创建一个注入器.(PLUNKER)

Why are you calling jquery outside of angular? Normally you would do something from inside an angular directive for instance and that would have access to $compile. If you absolutely need access outside you can create an injector. (PLUNKER)

angular.module('myApp', []).directive('test', function($compile) {
  return {
    restrict: 'E',
    link: function(scope, element, attributes) {
      $(element).html('<h1>this is a test!</h1>')
    }
  }
});

///////////////////////////////////////////////////////////////////////////////
// called outside angular, you can create an injector that knows about
// certain modules
///////////////////////////////////////////////////////////////////////////////
$(function() {
  // myApp for test directive to work, ng for $compile
  var $injector = angular.injector(['ng', 'myApp']);
  $injector.invoke(function($rootScope, $compile) {
    $('body').prepend($compile('<test>Inside injector</test>')($rootScope));
  });
});

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