Read environment variables in Node.js

javascript node.js environment-variables

process.env.ENV_VARIABLE

Where ENV_VARIABLE is the name of the variable you wish to access.

javascript node.js environment-variables

When using Node.js, you can retrieve environment variables by key from the process.env object:

for example

var mode   = process.env.NODE_ENV;var apiKey = process.env.apiKey; // '42348901293989849243'

javascript node.js environment-variables

If you want to use a string key generated in your Node.js program, say, var v = 'HOME', you can useprocess.env[v].

Otherwise, process.env.VARNAME has to be hardcoded in your program.

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