JavaScript typeof Array
Array.isArray(arr)
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Array.isArray(arr)//The method Array.isArray(A) checks if A is an array
Array.isArray([1, 2, 3]); // true
Array.isArray('foobar'); // false for strings
Array.isArray({foo: 123}); // false for objects const array = [ 'this', 'is', 'an', 'array' ];
console.log(typeof array); //objectArray.isArray(obj)Array.isArray([1, 2, 3]); // true