javascript string interpolation not working in google console code example

Example 1: javascript string interpolation

var animal = "cow";
var str=`The ${animal} jumped over the moon`; // string interpolation

Example 2: how to build a string javascript es6

var name = "John" ;
var age = 32 ; 

console.log(`My name is ${name}, and I'm ${age} years old.`)
//displays : My name is John, and I'm 32 years old.