代码如下： htmlheadtitleJS 判断 radio 单选按钮是否选中-/titlescript type=text/javascript function ValidateRadio() {var radioSelete = Nothing;var seletedValue;for(i=0;idocument.form1.rValue.length;i++){if(document.form1.rValue[i].checked){radioSelete = seleted;seletedValue = document.form1.rValue[i].value;}}if(radioSelete == Nothing){alert(请选择一个地名，);return false;}else{alert(您选中的是：+seletedValue);return true;} }/script/headbodyform name=form1input type=radio name=rValue value=四川四川input type=radio name=rValue value=江苏江苏input type=radio name=rValue value=南京南京input type=radio name=rValue value=天津天津input type=radio name=rValue value=上海上海input type=button onclick=return ValidateRadio() value=验证/form/body/html ，。