read a file in javascript node js 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: node open file

const fs = require("fs");

// __dirname means relative to script. Use "./data.txt" if you want it relative to execution path.
fs.readFile(__dirname + "/data.txt", (error, data) => {
    if(error) {
        throw error;
    }
    console.log(data.toString());
});