working with environment variables in node.js code example

Example 1: how to read environment variable in node js

var myEnvVariable = process.env.ENV_VARIABLE_NAME

Example 2: windows how to set process.env variables

set NODE_ENV=production

Example 3: node how to set environment variable

// get an environment variableexport const token = process.env['API_TOKEN'];// set an environment variable at runtimeprocess.env['RANDOM_ID'] = Math.random();