How to check if $scope exists in AngularJS?

Question

Angular

When the variable is empty, I cannot catch the error so that I can call the desired function in the else .

if(typeof $scope.formData.telephone == undefined) {
   //...
} else {
   //...
}

Error in console

TypeError: Cannot read property 'telephone' of undefined

Answer 1

if($scope.formData && $scope.formData.telephone) {
ps Stop using $scope!