CODE EXAMPLE FOR JAVASCRIPT

How to check if an object is an array or not?

var arrayList = [1 , 2, 3];
console.log(Array.isArray(arrayList)) // true
// method 1
if(Array.isArray(arrayList)){
    console.log("is array")
}
// method 2
if(Object.prototype.toString.call(arrayList) === '[object Array]') {
  console.log('Array!');
}