How do you pass Section 508 for a searchbox in HTML 5?

508 Standards, Section 1194.22 (a) states that:

A text equivalent for every non-text element shall be provided (e.g., via "alt", "longdesc", or in element content).

For a searchbox, using

<input type="text" alt="Search" value="" tabindex="1" name="s" id="s" />

passes the 508 Standards, but doesn't pass HTML 5 validation.

Is using <label> tags the only way of passing both the 508 Standards and the HTML 5 validation, because I would like to avoid having an unnece开发者_运维技巧ssary <label> tag?

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I think you need to page more attention to 1194.22 (n) in this situation. If you really, desperately need to do without a separate label you could try something like this:

<input type="search" value="" tabindex="1" name="s" id="s" />
<label for="s"><input type="submit" value="search"></label>

But I would strongly recommend at least trying this out in a screenreader (NVDA is free, JAWS can be used for 40 minutes on a 'free trial') or, even better, setting up a test page and getting some screen reader users to try it.

Alternatively you could investigate aria-labelledby and see if that allows you to fit in your label more naturally.