How do I pass command line arguments to a Node js program

0 votes

I have a web server written in Node.js and I would like to launch with a specific folder. I'm not sure how to access arguments in JavaScript. I'm running node like this:

$ node server.js folder

here server.js is my server code. Node.js help says this is possible:

$ node -h
Usage: node [options] script.js [arguments]

How would I access those arguments in JavaScript? Somehow I was not able to find this information on the web.

May 5, 2020 in Java-Script by kartik
• 37,510 points
2,887 views

1 answer to this question.

0 votes

Hello @kartik,

If your script is called myScript.js and you want to pass the first and last name, 'Sean Worthington', as arguments like below:

node myScript.js Sean Worthington

Then within your script you write:

var firstName = process.argv[2]; // Will be set to 'Sean'
var lastName = process.argv[3]; // Will be set to 'Worthington'

Hope this works!!

Thank You!!

answered May 5, 2020 by Niroj
• 82,880 points

Related Questions In Java-Script

+1 vote
1 answer

How do I pass JavaScript variables to PHP?

Hello @kartik, You cannot pass variable values from ...READ MORE

answered Jul 6, 2020 in Java-Script by Niroj
• 82,880 points
18,742 views
0 votes
1 answer

How do I add arbitrary html attributes to input fields on a form?

Hello @kartik, If you are using ModelForm, apart from ...READ MORE

answered Jul 27, 2020 in Java-Script by Niroj
• 82,880 points
633 views
0 votes
1 answer

How do I remove documents using Node.js Mongoose?

Hello @kartik, If you don't feel like iterating, ...READ MORE

answered Sep 4, 2020 in Java-Script by Niroj
• 82,880 points
758 views
0 votes
1 answer

How do I use format() on a moment.js duration?

Hello @kartik, Use this: // set up let start = ...READ MORE

answered Oct 7, 2020 in Java-Script by Niroj
• 82,880 points
1,779 views
0 votes
1 answer

jQuery AJAX fires error callback on window unload - how do I filter out unload and only catch real errors?

Hello, In the error callback or $.ajax you have three ...READ MORE

answered Apr 27, 2020 in Java-Script by Niroj
• 82,880 points
3,680 views
0 votes
1 answer

Error:Issue when trying to use IN() in wordpress database

Hello @kartik, Try this code : // Create an ...READ MORE

answered May 8, 2020 in PHP by Niroj
• 82,880 points
810 views
+2 votes
1 answer

How do I debug Node.js applications?

Hello @kartik, Use node-inspector  from any browser supporting WebSocket. Breakpoints, ...READ MORE

answered Jul 8, 2020 in Node-js by Niroj
• 82,880 points
746 views
0 votes
1 answer

How do I get the path to the current script with Node.js?

Hello @kartik, you can do this: fs.readFile(path.resolve(__dirname, 'settings.json'), 'UTF-8', ...READ MORE

answered Jul 8, 2020 in Node-js by Niroj
• 82,880 points
2,434 views
0 votes
1 answer

How do I turn a string to a json in Node.js?

Hello Kartik, Use the JSON function  JSON.parse(theString) ...READ MORE

answered Apr 24, 2020 in Java-Script by Niroj
• 82,880 points
751 views
0 votes
1 answer

How do I pass variables and data from PHP to JavaScript?

Hello @kartik, Simply use one of the following ...READ MORE

answered Jul 6, 2020 in Java-Script by Niroj
• 82,880 points
1,530 views
webinar REGISTER FOR FREE WEBINAR X
REGISTER NOW
webinar_success Thank you for registering Join Edureka Meetup community for 100+ Free Webinars each month JOIN MEETUP GROUP