Answers for "how to set 3 radio button checked in html"

html radio only one checked

<!--Just manke both names equal -->
<input type="radio" name="options" id="1"/>
<input type="radio" name="options" id="2"/>

radio checked on start

<!--HTML solution-->
<input type="radio" checked/>
<!--XHTML solution-->
<input type="radio" checked="checked" />