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cors with additional options

Ashutosh Panigrahy answered on December 26, 2023 Popularity 7/10 Helpfulness 5/10

answer cors with additional options

cors with additional options

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var express = require('express')
var cors = require('cors')
var app = express()

var allowlist = ['http://example1.com', 'http://example2.com']
var corsOptionsDelegate = function (req, callback) {
  var corsOptions;
  if (allowlist.indexOf(req.header('Origin')) !== -1) {
    corsOptions = { origin: true } // reflect (enable) the requested origin in the CORS response
  } else {
    corsOptions = { origin: false } // disable CORS for this request
  }
  callback(null, corsOptions) // callback expects two parameters: error and options
}

app.get('/products/:id', cors(corsOptionsDelegate), function (req, res, next) {
  res.json({msg: 'This is CORS-enabled for an allowed domain.'})
})

app.listen(80, function () {
  console.log('CORS-enabled web server listening on port 80')
})

Popularity 7/10 Helpfulness 5/10 Language javascript

Source: expressjs.com

Tags: cors javascript

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Contributed on Dec 26 2023

Ashutosh Panigrahy

0 Answers Avg Quality 2/10

cors with additional options

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