How can I obtain system arguments in node.js?

Question

node helloworld.js alex

I want it to console.log() alex. How do I pass "alex" as an argument into the code?

In python ,it is sys.argv[1]

Jørgen · Accepted Answer · 2012-07-13 09:43:20Z

4

You can access command line arguments using process.argv in node.js.

The array also includes the node command and the application file, so the first custom command line argument will have an index = 2.

process.argv[2] === 'alex'; // true

http://nodejs.org/api/process.html#process_process_argv

edited Jul 13, 2012 at 9:43

answered Jul 13, 2012 at 8:39

Jørgen

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2 Comments

Linus Thiel Over a year ago

Jørgen is right, but mind that "alex" is process.argv[2] in the example.

Jørgen Over a year ago

Thanks, I included it in the answer :)

Community · Accepted Answer · 2017-05-23 12:28:25Z

0

If your requirements are more complex and you can take advantage of a command line argument parser, there are several choices. Two that seem popular are

https://www.npmjs.org/package/minimist (simple and minimal)
https://www.npmjs.org/package/nomnom (option parser with generated usage and commands)

More options available at How do I pass command line arguments?

edited May 23, 2017 at 12:28

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answered Dec 1, 2014 at 10:15

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