how to access data of readfile code example

Example 1: read file node

// load fs
const fs = require("fs");
// read the file
const content = fs.readFileSync("./my_file.txt");
// print it
console.log(content.toString());

Example 2: fs readfile not working

const content = fs.readFileSync('./Index.html', 'utf8');
console.log(content);