// ES5
var first = 'Forrest';
var last  = 'Brownlie';
console.log('My name is ' + first + ' ' + last + '.');
// My name is Forrest Brownlie

// ES6
const firstName = 'Forrest';
const lastName  = 'Brownlie';
console.log(`My name is ${firstName} ${lastName}`);
// My name is Forrest Brownlie