angular.isDefined() vs obj.hasOwnProperty()

Question

I have an object that may or may not have a status. When using the angular.js framework which would be more appropriate. What are the advantages and disadvantages of both.

var checkStatus = function(item){
    if(angular.isDefined(item.status){
        //do something
    }
    //VS.
    if(item.hasOwnProperty('status')){
       //do something
    }
}
checkStatus(item);

Answer 1

angular.isDefined only test if the value is undefined :

function isDefined(value){return typeof value !== 'undefined';}

Object.hasOwnProperty test if the value is a direct one and not an inherited one.

For example :

var test = {};
angular.isDefined(test.toString); // true
test.hasOwnProperty('toString'); // false

info : https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/hasOwnProperty