minesweeper.directive('ngRightClick', function($parse) { return function(scope, element, attrs) { var fn = $parse(attrs.ngRightClick); element.bind('contextmenu', function(event) { scope.$apply(function() { event.preventDefault(); fn(scope, {$event:event}); }); }); }; });

The above code explains that it is a custom ngRightClick instruction, but first of all I can’t understand its meaning. Shouldn’t a custom instruction be in the following form:

minesweeper.directive("mineGrid",function(){ return { restrict:'E', replace:false, templateUrl:'./templates/mineGrid.html' } });

Please give me some advice