Firefox扩展如何以编程方式获得自己的版本号？ [英] How can a Firefox extension get its own version number programmatically?

问题描述

我的扩展程序有一个包含版本的install.rdf文件数字类似于下面。我想提取< em：version> 标记的内容。

 <？xml version =1.0encoding =UTF-8？> 
  xmlns：em =http：//www.mozilla。组织/ 2004 / EM-RDF＃> 
<描述about =urn：mozilla：install-manifest> 
 ... 
< em：version> 1.0< / em：version> 
 ... 
< /说明> 
< / RDF> 
  

解决方案

我还没有得到完整的答案，找到扩展扩展，看看源代码，因为它似乎是一个很好的起点，从谷歌搜索一些方法，我发现这个片段在MDC 。代码的关键点似乎是这样的：

  var gExtensionManager = Components.classes [@ mozilla.org/extensions/ manager; 1] 
 .getService（Components.interfaces.nsIExtensionManager）; 
 var current = gExtensionManager.getItemForID（[e-mail]）。version; 
  

您必须替换 [e-mail] 用适当的ID标识你的扩展名。

Firefox 4需要不同的代码，请参阅其他答案。

How do I programatically get my own Firefox extension's version number with Javascript?

My extension has an install.rdf file containing the version number similar to below. I want to extract the contents of the <em:version> tag.

<?xml version="1.0" encoding="UTF-8"?>
<RDF xmlns="http://www.w3.org/1999/02/22-rdf-syntax-ns#" 
 xmlns:em="http://www.mozilla.org/2004/em-rdf#">
  <Description about="urn:mozilla:install-manifest">
    ...
    <em:version>1.0</em:version>
    ...
  </Description>
</RDF>

解决方案

I've not got the full answer, but I found the Extended extension and had a look at the source code as it seemed like a good starting point, and from Googling some of the methods in that I found this snippet on MDC. The key bit of code would seem to be this:

var gExtensionManager = Components.classes["@mozilla.org/extensions/manager;1"]
                        .getService(Components.interfaces.nsIExtensionManager);
var current = gExtensionManager.getItemForID("[e-mail]").version;

You would have to replace [e-mail] with the appropriate ID for your extension.

Firefox 4 requires different code, see the other answer.

这篇关于Firefox扩展如何以编程方式获得自己的版本号？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！