value of radio with form attribute is affected by radio without form attribute.
But, sending value dose not include radio without form attribute.
Code: Select all
<label>1
<input form="a" type="radio" name="radio" value="1" checked id="radio1">
</label>
<label>2
<input form="a" type="radio" name="radio" value="2">
</label>
<form id="a" method='post'>
<label>3
<input form="" type="radio" name="radio" value="3">
</label>
<input type='submit'>
</form>
1, 2: radio with form attribute
3: radio without form attribute
When click "3", "1" radio became unchecked.
But, posted value does not include key of "radio".