defaultCheckedサンプル

■スクリプト
<HTML>
<HEAD>
<TITLE>Sample</TITLE>
</HEAD>
<BODY bgColor="white">
<CENTER>
<H1>defaultCheckedサンプル</H1>
</CENTER>
<P>
<FORM NAME="myFORM">
<INPUT TYPE="radio" NAME="MZ" VALUE="MZ">
<INPUT TYPE="radio" NAME="MZ" VALUE="AMIGA" checked>
<INPUT TYPE="radio" NAME="MZ" VALUE="Mac">
</FORM>
<HR>
<SCRIPT Language="JavaScript">
<!--
for (i=0; i<3; i++) document.write(document.myFORM.elements[i].defaultChecked,"<BR>");
// -->
</SCRIPT>
</BODY></HTML>