js取消单选按钮选中并判断对象是否为空

var country = document.getElementsByName(country);
for(var i=0;i<country.length;i++){
if(country[i].checked)
{
country[i].checked=false; //不选中
}
}

<c:if test="${shippingAddressList != null && not empty shippingAddressList}"> //判断集合shippingAddressList 是否为空