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EmberJS 组件未指定的操作

2018-01-03 19:16 更新

描述

它确定在组件中未定义操作。

语句

Ember.Component.extend({
   //without actions generate error as:
   // had no action handler for: action name

   click: function() {
      this.sendAction();
   }
});

例子

<!DOCTYPE html>
<html>
   <head>
      <title>Emberjs Actions that aren't Specified</title>
      <!-- CDN's -->
      <script src="https://cdnjs.cloudflare.com/ajax/libs/handlebars.js/3.0.1/handlebars.min.js"></script>
      <script src="https://code.jquery.com/jquery-2.1.3.min.js"></script>
      <script src="https://cdnjs.cloudflare.com/ajax/libs/ember.js/1.10.0/ember.min.js"></script>
      <script src="https://builds.emberjs.com/tags/v1.10.0-beta.3/ember-template-compiler.js"></script>
      <script src="https://builds.emberjs.com/release/ember.debug.js"></script>
      <script src="https://builds.emberjs.com/beta/ember-data.js"></script>
   </head>
   <body>
      <script type="text/x-handlebars" data-template-name="index">
         <h2>Error Action Not Specified</h2>
         <p>Tag: {{title}}</p>
         <p>{{my-comp title=title action="compFunc"}}</p>
      </script>

      <script type="text/x-handlebars" data-template-name="components/my-comp">
         <input type="button" value="Click me" {{action "compFunc"}}/>
      </script>

      <script type="text/javascript">
         App = Ember.Application.create();

         App.MyCompComponent = Ember.Component.extend({
            //this leads an error due to an action not specified
            click: function() {
               this.set('title', "Tutorialspoint...");
               this.sendAction();
            }
         });
      </script>
   </body>
</html>

输出

让我们执行以下步骤，看看上面的代码如何工作：

将上面的代码保存在comp_actn_notspcfy.html文件中
在浏览器中打开此HTML文件。

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