What is the JavaScript >>> operator and how do you use it?

Question

I was looking at code from Mozilla that add a filter method to Array and it had a line of code that confused me.

var len = this.length >>> 0;
         


        

Answer 1

Sample Java Code below explains well:

int x = 64;

System.out.println("x >>> 3 = "  + (x >>> 3));
System.out.println("x >> 3 = "  + (x >> 3));
System.out.println(Integer.toBinaryString(x >>> 3));
System.out.println(Integer.toBinaryString(x >> 3));

Output is the following:

x >>> 3 = 536870904
x >> 3 = -8
11111111111111111111111111000
11111111111111111111111111111000