JavaScript make a headers only call

Question

How does one make a call in JS to get only the header details for a remote asset? I would like to check the size of the image before deciding to use it

I'm looking for a JS equivalent of:

curl -s --head 'https://www.google.com/images/branding/googlelogo/2x/googlelogo_color_120x44dp.png'

score 3 · Accepted Answer · answered Feb 13 '19 at 13:17

3

First, pick an HTTP client library. Then use the HEAD method.

e.g.

const head_request_promise = axios({
  method: 'head',
  url: '/user/12345',
});

answered Feb 13 '19 at 13:17

Quentin

914,110
126
1,211
1,335

Or also just the built-in `require('https')` – Christian Vincenzo Traina Feb 13 '19 at 13:21
@CristianTraìna — There are many libraries they could pick. – Quentin Feb 13 '19 at 13:22
1

But this doesn't require any dependence :) – Christian Vincenzo Traina Feb 13 '19 at 13:24

score 0 · Answer 2 · answered Feb 13 '19 at 13:23

this question was asked here also

If you want to use request :

var request = require('request');

request("https://www.google.com/images/branding/googlelogo/2x/googlelogo_color_120x44dp.png", {method: 'HEAD'}, function (err, res, body){
  console.log(res.headers);
});

If you want to use node-fetch:

const fetch = require('node-fetch');

fetch('https://www.google.com/images/branding/googlelogo/2x/googlelogo_color_120x44dp.png')
.then(res => console.log(res.headers.raw()))

JavaScript make a headers only call

2 Answers2