What will be the output of the following JavaScript code?

function totalelements()  
{  
    var allgenders=document.getElementsByName("gender");  
    alert("Total Genders:"+allgenders.length);  
}  
<form>  
     <input type="radio" name="gender" value="male">  
     <input type="radio" name="gender" value="female">  
     <input type="button" onclick="totalelements()" value="Total Genders">  
</form>