Question

I was just wondering what valid characters can be included as the value for a <option>

i.e. is this valid?

<select>
    <option value='0dbl,2sgl'>0 Double and 2 Singles</option>
    <option value='1dbl,0sgl'>1 Double and 0 Singles</option>
</select>

Answer 1

Yes, that’s perfectly valid. See the specification: it says the content of value should be CDATA, in which pretty much everything is valid, with the following caveats:

• Replace character entities with characters,
• Ignore line feeds,
• Replace each carriage return or tab with a single space.