DOM顺序确定表单参数的顺序吗？ [英] does DOM order determine the order of form parameters posted?

问题描述

如果我有这样的表单：

<form>
  <input name="param[]" />
  <input name="param[]" />
  <input name="param[]" />
</form>

可以在提交表单时以相同的顺序接收这些参数？

Can I expect to receive these parameters in the same order when the form is submitted?

我注意到，Chrome，Rails和Webrat保留了参数的顺序，但这可能是由实现细节而不是遵守标准引起的。

I've noticed that Chrome, Rails, and Webrat preserve the order of the parameters, but that may be caused by implementation details rather than adherence to a standard.

推荐答案

这是标准。我发现 W3C规范非常有用和可读。

This is the standard. I find that the W3C specification is very useful and readable.

应用程序/ x-www-form-urlencoded ...

控制名称/值按文档中显示的顺序列出。

The control names/values are listed in the order they appear in the document.

multipart / form-data ...

部件以相同的顺序发送到处理代理，相应的控件出现在文档流中。

The parts are sent to the processing agent in the same order the corresponding controls appear in the document stream.

我还没有遇到没有遵循这个惯例的浏览器，所以我会说你很安全地使用它。

I have yet to encounter a browser that doesn't follow this convention, so I'd say you're pretty safe to use it.

说，我的语义骨头依靠这个惯例有点不舒服。如果订购至关重要，我会改用：

That being said, my semantic bone is a bit uncomfortable with relying on this convention. If ordering is crucial, I would instead use:

<form>
  <input name="param[0]" />
  <input name="param[1]" />
  <input name="param[2]" />
</form>

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