php實作複選框實作單選

<input type="checkbox" name="gname"   value=""  onclick="return chooseOne(this);"/>
<input type="checkbox" name="gname"   value=""  onclick="return chooseOne(this);"/>

function chooseOne(cb){ 
//复选框实现单选       
 var obj = document.getElementsByName("gname");        
 for (var i=0; i<obj.length; i++){                
 if (obj[i]!=cb){                                                     
 obj[i].checked = false;                                                        
  }else{                   obj[i].checked = cb.checked;                                  
   }                                      
   }    
    }