Check if an object has a property
angularjs, object
Solution
You could use 'hasOwnProperty' to check if object have the specific property.
if($scope.test.hasOwnProperty('bye')){
// do this
}else{
// do this then
}
Here's a demo in jsFiddle.
Hope this helpful.
Problem
How can I check if an object has a certain property in AngularJS?