无效字符错误：“fred” [英] InvalidCharacterError: "fred"

问题描述

我相信他一定是个新手问题。简单来说，我想定义我的第一个Polymer-dart组件。只有我继续踢我的脚趾在同样的速度驼峰。

I am sure his must be a newbie question. In simple terms I wanted to define my first Polymer-dart component. Only I keep kicking my toe on the same speed-hump. To keep things very simple, I've stripped it back to a very simple example.

我做了一个简单的 重命名 strong>示例：Dart组件中的'秒表组件Polymer-dart教程：

I did a simple rename of the example: 'stopwatch'component from the Dart component Polymer-dart tutorial:

• 定义自定义元素

我有类似问题标题中的错误，因此重命名的组件是：

I had errors similar to the one in the question title, so the renamed component is:

• ' fred '...从：' tute-stopwatch '

• 'fred' ... from: 'tute-stopwatch'

这样做后，我得到下面的错误跟踪。它看起来我的名字是我的问题。我通过在每次增量更改后运行示例（还能做什么？）来确认。我保留了文件名：

When this is done, I get the error trace below. It looks to me that the name is my problem. I confirmed this by running the example after each incremental change (what else can you do?). I retained the file names:

• tute_stopwatch.html


• tute_stopwatch.dart

从示例中，只更改了组件标签名称。这意味着3个文件中的更改。

From the example, and only changed the component label name. That means a change in 3 x files.

1. index.html
   
   
   
   
   • < fred >< / fred >
     
     
     
     
     • >：< tute-stopwatch>< / tute-stopwatch>
     
     

1. index.html
   
   • <fred></fred>
     
     • from: <tute-stopwatch></tute-stopwatch>

• < polymer-element name = fred >
  
  
  
  
  • 来自：< polymer -element name =tute-stopwatch>
  
  
  • <polymer-element name="fred">
    
    • from: <polymer-element name="tute-stopwatch">
    li> @CustomTag（' fred '）
    
    
    
    • ：@CustomTag（'tute-stopwatch'）
    • 
      
    • @CustomTag('fred')
      • from: @CustomTag('tute-stopwatch')

      对于一个简单的更改，必须更新三个（ 3 ）的东西是理想的，它仍然非常基本，

      Although, I can't say having to update three(3) things for one simple change is ideal, it is still very basic and very simple to 'make' a new element with Polymer-dart once you have a model definition.

      除了，有什么问题吗？ 我想我可以问的第二个问题是：

      Apart from, what went wrong? I guess a second question I can ask is, what does the:

      
      
      • '类型名称无效。 '... 平均？
      
      
      • 'The type name is invalid.' ... Mean?

      问题确实是一个新手问题。然而，由于'解决方案'不明显或直观，我错过了一些东西。哦，错误使没有感觉（对纯粹的凡人）。 Muy gracias ...

      The question is decidedly a newbie question. However because the 'solution' is not obvious or intuitive, I've missed something. Oh and the error makes No Sense (to mere mortals). Muy gracias ...

      Uncaught Error: InvalidCharacterError: Registration failed for type 'fred'. The type name is invalid.
      Stack Trace: 
      #0      _Utils._register (file:///E:/b/build/slave/dartium-win-full-stable/build/src/dart/tools/dom/src/native_DOMImplementation.dart:450)
      #1      _Utils.register (file:///E:/b/build/slave/dartium-win-full-stable/build/src/dart/tools/dom/src/native_DOMImplementation.dart:446)
      #2      HtmlDocument.register (file:///E:/b/build/slave/dartium-win-full-stable/build/src/build/Release/obj/global_intermediate/blink/bindings/dart/dart/html/HtmlDocument.dart:266)
      #3      PolymerDeclaration.registerType (package:polymer/src/declaration.dart:241:22)
      #4      PolymerDeclaration.register (package:polymer/src/declaration.dart:164:17)
      #5      PolymerDeclaration._register (package:polymer/src/declaration.dart:114:13)
      #6      PolymerDeclaration.registerWhenReady (package:polymer/src/declaration.dart:109:14)
      #7      _notifyType (package:polymer/src/declaration.dart:476:49)
      #8      Polymer.register (package:polymer/src/instance.dart:65:16)
      #9      _loadLibrary (package:polymer/src/loader.dart:196:25)
      #10     _loadLibraries (package:polymer/src/loader.dart:89:19)
      #11     _initPolymerOptimized (package:polymer/src/loader.dart:54:17)
      #12     _rootRun (dart:async/zone.dart:710)
      #13     _ZoneDelegate.run (dart:async/zone.dart:440)
      #14     _CustomizedZone.run (dart:async/zone.dart:650)
      #15     initPolymer (package:polymer/src/loader.dart:37:33)
      #16     main (package:polymer/init.dart:23:22)
      
      Exception: InvalidCharacterError: Registration failed for type 'fred'. The type name is invalid.  undefined (undefined:0:0)
      

      
      

      推荐答案

      的聚合物元素必须包含破折号，以便将它们与标准DOM元素区分开来。

      The tag name of polymer elements must contain a dash to differentiate them from standard DOM elements.

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