<html><head><meta http-equiv="Content-Type" content="text/html; charset=gb2312" /><title>判断一组Radio选择 是否被选择了</title></head><body>
<script type="text/javascript">
function check()
{
if(!IsSeleRadio("b")) { alert("b还没有选择");
} }//彭彭编写 是否选择了Radiofunction IsSeleRadio(bname){ var bn = document.getElementsByName(bname); var k = 0;//全部都没有 回来和bn.length对比用的 for(i=0;i<bn.length;i++) { if(!bn[i].checked) { k++; } } if(k == bn.length) { return false; } else { return true; }
}</script><form id="form1" name="form1" method="post" action=""> <p> <input type="radio" name="b" value="radiobutton" /> 000 <input type="radio" name="b" value="radiobutton" /> 111 <input type="radio" name="b" value="radiobutton" /> 222</p> <p> <input type="radio" name="a" value="radiobutton" /> 333 <input type="radio" name="a" value="radiobutton" /> 444 <input type="radio" name="a" value="radiobutton" /> 555</p> <p> <input type="submit" onclick="check();return false;" name="Submit" value="提交" /> </p></form></body></html>