JS Optinol Chine khuja

                          JS Optinol Chine

const language = {

  name: 'JavaScript',

  creator: 'Brendan Eich',

  library: {

    react: {

      company: 'Facebook'

    }

  }

};

let company = language?.library?.react?.company;

console.log(company);

// Arrey site

let colors = ['red', 'green', 'blue'];

colors = null;

console.log(colors?.[1]);