使用客户端模板的脚本标签，为什么不能通过src属性加载?

这正常工作(可以通过id访问dom中的代码段)

this works fine (am able to access the snippet in the dom by id)

<script type="text/x-template" id="todo-item-template">
  <div class="todo-view">
    {blah} {blah}
  </div>
</script>

但是如果我将模板放在外部资源中，则无法在dom中找到它:

but if i put the template in an external resource, i can't find it in the dom:

<script type="text/x-template" id="todo-item-template" src="todo-item-template.html">

chrome给我一个警告，我认为这是无关紧要的:

chrome is giving me a warning which i think is irrelevant:

Resource interpreted as Script but transferred with MIME type text/html: 
"http://localhost:8000/todo2/todo-stats-template.html". 

我正在从文件系统和/或 python -m SimpleHTTPServer 运行.有什么想法吗?

i am running from the filesystem, and/or from python -m SimpleHTTPServer. any ideas?