js method that create array of length code example

Example 1: js length of array

arr = ["a", "b", "c"];
len = arr.length; // 3

Example 2: array length in js'

var x = [];
  console.log(x.size());
  console.log(x.length);
  console.log(x.size()==x.length);
  x =[1,2,3];
  console.log(x.size());
  console.log(x.length);
  console.log(x.size()==x.length);
//arjun