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