Express JavaScript Answers

How to Call the Express res.sendFile Method with an Absolute Path?

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To call the Express res.sendFile method with an absolute path, we can call the sendFile method with the root option set to the __dirname .

__dirname has the path string of the current working directory as its value.

For instance, we can write:

const express = require('express')
const app = express()
const port = 3000

app.get('/', (req, res) => {
  res.sendFile('public/index.html' , { root : __dirname});

app.listen(port, () => {
  console.log(`Example app listening at http://localhost:${port}`)

We call res.sendFile with the file path as the first argument.

It’s the path relative to the folder path set as the value of root .

root is set to __dirname , so the path in the first argument is relative to __dirname .

By John Au-Yeung

Web developer specializing in React, Vue, and front end development.

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