How to check the object is an array or not?

Question

What is the correct and best way to check the object is an array or not ?

$scope.studentArray= [{student1},{student2},{student3}];

Answer 1

Please use this http://docs.angularjs.org/api/ng/function/angular.isArray

angular.isArray($scope.studentArray);

Answer 2

I would install Underscore.js and use the isArray function like so:

_.isArray($scope.studentArray);

Answer 3

What about:

if(Object.prototype.toString.call($scope.studentArray) === '[object Array]') {
  // is array
}

Answer 4

i recommend Lo-Dash it uses underscore plus some nice features

syntax is similar/same as underscore

greetings

Answer 5

Cleanest solution without any libraries would be:

var arr = ['val1','val2','val3'];
console.log(arr instanceof Array); // true

var astring = 'test';
console.log(astring instanceof Array); // false;