How to get GET (query string) variables in Express.js on Node.js?

Question

Can we get the variables in the query string in Node.js just like we get them in $_GET in PHP?

I know that in Node.js we can get the URL in the request.

Answer 1

If you are using ES6 and Express, try this destructuring approach:

const {id, since, fields, anotherField} = request.query;

In context:

const express = require('express');
const app = express();

app.get('/', function(req, res){
   const {id, since, fields, anotherField} = req.query;
});

app.listen(3000);

You can use default values with destructuring too:

// sample request for testing
const req = {
  query: {
    id: '123',
    fields: ['a', 'b', 'c']
  }
}

const {
  id,
  since = new Date().toString(),
  fields = ['x'],
  anotherField = 'default'
} = req.query;

console.log(id, since, fields, anotherField)