var fruits = ["Banana", "Orange", "Apple", "Mango"]; fruits.length;
var numbers = [1, 2, 3, 4, 5]; var length = numbers.length; for (var i = 0; i < length; i++) { numbers[i] *= 2; } // numbers is now [2, 4, 6, 8, 10]
var arr = [10,20,30,40,50]; //An Array is defined with 5 instances var len= arr.length; //Now arr.length returns 5.Basically, len=5. console.log(len); //gives 5 console.log(arr.length); //also gives 5