<input name="s" type="radio" value="1" checked onClick="check1()">
<input name="s" type="radio" value="2" onClick="check1()">
<input name="s" type="radio" value="3" onClick="check1()">
<input name="s1" type="radio" value="0" checked>
<input name="s1" type="radio" value="G">
<input name="s1" type="radio" value="M">
<SCRIPT language=Javascript>
function check1()
{
var obj=document.all.s1;
for( var i=0;i<obj.length;i++)
{
obj[i].disabled=document.all.s[2].checked;
}
}
</SCRIPT>
<input name="s" type="radio" value="2" onClick="check1()">
<input name="s" type="radio" value="3" onClick="check1()">
<input name="s1" type="radio" value="0" checked>
<input name="s1" type="radio" value="G">
<input name="s1" type="radio" value="M">
<SCRIPT language=Javascript>
function check1()
{
var obj=document.all.s1;
for( var i=0;i<obj.length;i++)
{
obj[i].disabled=document.all.s[2].checked;
}
}
</SCRIPT>
解决方案 »
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<HTML>
<HEAD>
<TITLE> New Document </TITLE>
<META NAME="Generator" CONTENT="EditPlus">
<META NAME="Author" CONTENT="">
<META NAME="Keywords" CONTENT="">
<META NAME="Description" CONTENT="">
</HEAD><BODY>
<input name="s" type="radio" value="1" checked >
<input name="s" type="radio" value="2" >
<input name="s" type="radio" value="3" onClick="check1()">
<input name=s1 id="s1" type="radio" value="0" checked>
<input name=s1 id="s1" type="radio" value="G">
<input name=s1 id="s1" type="radio" value="M">
<SCRIPT language=Javascript>
function check1()
{
if(event.srcElement.value==3)
for(i=0;i<s1.length;i++) s1[i].disabled=true;
}
</SCRIPT></BODY>
</HTML>
obj[i].disabled=document.all.s[2].checked;
等同于
obj[i].disabled=true;
当你点击s的第3个单选框时,s[2]就被选中,即
document.all.s[2].checked 等于 true;
<input name="s1" type="radio" value="0" checked>
<input name="s2" type="radio" value="G">
<input name="s3" type="radio" value="M">