Question

我是Ember.js的新手。我想在初始化后专注于TextField（在示例中，id =“text”），但是在准备好的功能中，不起作用的方法......

<body>
  <!-- library load -->
  <script src="http://ajax.googleapis.com/ajax/libs/jquery/1.6.1/jquery.min.js"></script>
  <script>!window.jQuery && document.write(unescape('%3Cscript src="js/libs/jquery-1.6.1.min.js"%3E%3C/script%3E'))</script>
  <script src="http://cloud.github.com/downloads/emberjs/ember.js/ember-0.9.5.min.js"></script>

  <script type="text/x-handlebars">
        {{view Em.TextField id="text"}} // want to focus it.
  </script>
  <script type="text/javascript">
    var App = Em.Application.create();
        App.ready = function() {
            $('#text').focus(); // does'nt work.
        }
  </script>
</body>

Answer 1

以下代码可行：

<script type="text/x-handlebars">
      {{view App.TextField id="text"}} // want to focus it.
</script>
<script type="text/javascript">
  var App = Em.Application.create();

  App.TextField = Em.TextField.extend({
    didInsertElement: function() {
      this.$().focus();
    }
  });
</script>

Answer 2

对TextField进行子类化，然后在模板周围传播自定义View对我来说似乎有些混乱，所以我写了这个小的1kb软件包，让你可以直接在模板中更优雅地完成这项任务，任何进一步的编码：

<body>
  <!-- all the libraries -->
  <script src="http://cdnjs.cloudflare.com/ajax/libs/jquery/2.0.3/jquery.min.js"></script>
  <script src="http://cdnjs.cloudflare.com/ajax/libs/handlebars.js/1.3.0/handlebars.min.js"></script>
  <script src="http://cdnjs.cloudflare.com/ajax/libs/ember.js/1.2.0/ember.min.js"></script>
  <script src="http://rawgithub.com/AndreasPizsa/ember-autofocus/master/dist/ember-autofocus.min.js"></script>
  <!-- your template -->
  <script type="text/x-handlebars">
    Hello, world! {{ input }}
    :
    : more elements here
    :
    {{ autofocus }} {# <<<<-- Magic happens here #}
  </script>
  <!-- your app -->
  <script>
    Ember.Application.create();
  </script>
</body>

您可以从https://github.com/AndreasPizsa/ember-autofocus获取或者bower install ember-autofocus。我很感激反馈！

使用emberjs初始化后如何聚焦？

2 个答案: