ext checkboxgroup Backfill data solution

//Solve the problem of backfilling data of checkboxgroup
(,{
findField : function(id){
var field = (id);
if(!field){
(function(f){
if(('radiogroup')||('checkboxgroup')){
(function(c){
if( && ( == id || == id || () == id)){
field = c;
return false;
}
});
}

if( && ( == id || == id || () == id)){
field = f;
return false;
}
});
}
return field || null;
}

});