When working with angular.js, how should I handle objects that may or may not have a status? What are the pros and cons of using angular.isDefined() versus item.hasOwnProperty() in this scenario?
var checkStatus = function(item){
if(angular.isDefined(item.status){
//do something
}
//VS.
if(item.hasOwnProperty('status')){
//do something
}
}
checkStatus(item);
angular.isDefined simply checks if the value is undefined:
function isDefined(value){return typeof value !== 'undefined';}
Object.hasOwnProperty checks if the value is directly assigned, not inherited.
For instance:
var test = {};
angular.isDefined(test.toString); // true
test.hasOwnProperty('toString'); // false
Details can be found at: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/hasOwnProperty
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