html radio

使用:

<form action = "mytarget.asp" method = "post">

<input type="radio" name="fruit" value = "Apple" checked>苹果<br>
<input type="radio" name="fruit" value = "Orange">桔子<br>
<input type="radio" name="fruit" value = "Mango">芒果<br>
<input type="submit" value="提交">

</form>

获取值:

function GetRadioValue(RadioName){
    var obj;    
    obj=document.getElementsByName(RadioName);
    if(obj!=null){
        var i;
        for(i=0;i<obj.length;i++){
            if(obj[i].checked){
                return obj[i].value;            
            }
        }
    }
    return null;
}