directive自动聚焦

ionExtendModule.directive('ioeAutoFocus', ['$timeout',   
 function ($timeout) {      
  return {          
  restrict: 'A',           
 link: function (scope, element, attrs) {   
             scope.$watch(attrs.ioeAutoFocus, function (value) {  
                  if(value === true){           
             console.log('value=', value);      
                 $timeout(function () {          
                  element[0].focus();                 
       }, 200);                  
      //scope[attrs.ioeAutoFocus] = false;       
             }           
    });       
     }      
  };   
}]);