Is a value attribute required for a HTML SELECT element?

Question

The select menu value posted to the server should be the same as the text in the OPTION element.

On the browser I am using, the following produce identical results.

Is the second script "correct" and cross browser supported?

 <select>
  <option value="AAA">AAA</option>
  <option value="BBB">BBB</option>
  <option value="CCC">CCC</option>
</select>

 <select>
  <option>AAA</option>
  <option>BBB</option>
  <option>CCC</option>
</select>

Answer 1

According to MDN the attribute is optional as the value is inferred from the text if it is omitted

The content of this attribute represents the value to be submitted with the form, should this option be selected. If this attribute is omitted, the value is taken from the text content of the option element.