js控制checkbox单选

 function setCheckBoxSelect(idPrefix)
        {
             var theBox = document.getElementById(idPrefix);
             var elem = document.getElementsByTagName('input');
             if(theBox.checked)
             {
                 for(i = 0;i< elem.length; i++)
                 {
                     if(elem[i].type=='checkbox' && elem[i].id.indexOf(idPrefix) > -1)
                     {
                         elem[i].checked = true;
                         if(elem[i].id.indexOf('_Cur') >-1)
                         {
                            document.getElementById(elem[i].id.replace('_Cur','_Pri')).checked = false;
                         }
                         else
                         {
                             document.getElementById(elem[i].id.replace('_Pri','_Cur')).checked = false;
                          }
                      }
                  }
              }
              else
              {
                 for(i = 0;i< elem.length; i++)
                 {
                     if(elem[i].type=='checkbox' && elem[i].id.indexOf(idPrefix) > -1)
                     {
                         elem[i].checked = false;
                         if(elem[i].id.indexOf('_Cur') >-1)
                         {
                             document.getElementById(elem[i].id.replace('_Cur','_Pri')).checked = true;
                         }
                         else
                         {
                             document.getElementById(elem[i].id.replace('_Pri','_Cur')).checked = true;
                         }
                     }
                  }
              }
        
              return false;
        }
        //]]>
    </script>