Angular JS does not acknowledge null values

Within my controller, the variable $scope.test is assigned a value from the server. When this value is null, line 1 of the code below prints 'null', however it still enters the else condition. I have attempted to use $scope.test != null and $scope.test !== null, yet the null value is not being recognized.

alert($scope.test) //line 1 prints null
if(!$scope.test) {
    alert("$scope.test is null " + $scope.test);
}
else{
    alert("test not null"); // prints test not null
}

Answer №1

It is worth attempting to check the condition $scope.test!='null' before proceeding, as your server may be sending back a string response where a null value is represented by the string 'null'.

Answer №2

Verify the data type of typeof $scope.test to ensure it is returning an object rather than a string. In your situation, it should return an object. If you are receiving "null" as a string type, that may be causing the unrecognized issue.

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