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 in Java-Script by kartik
• 11,890 points
48 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 by Niroj
• 23,950 points

Related Questions In Java-Script

0 votes
1 answer

How to access PHP session variables from jQuery function in a .js file?

Hello, You can produce the javascript file via ...READ MORE

answered Apr 29 in Java-Script by Niroj
• 23,950 points
210 views
0 votes
1 answer

How to do API call in react js?

Hello, Use fetch method inside componentDidMount to update state: componentDidMount(){ fetch('https://dey.me/api/') ...READ MORE

answered May 18 in Java-Script by Niroj
• 23,950 points
48 views
+1 vote
1 answer

How to Check synchronously if file/directory exists in Node.js?

Hello, You can use fs.existsSync(): const fs = require("fs"); // ...READ MORE

answered May 28 in Java-Script by Niroj
• 23,950 points
28 views
+1 vote
1 answer

How can we send message multiple time to a specific person or group in whatsapp using loop?

Hii @kartik,  This is simple task to send single ...READ MORE

answered Feb 28 in Java-Script by Niroj
• 23,950 points
250 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 in Java-Script by Niroj
• 23,950 points
21 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 in PHP by Niroj
• 23,950 points
27 views
0 votes
0 answers

Anyone can help me out to understand the semantic of (document.getElementBYId("demo").innerHTML="Hello") ?

Hello guys, Can Someone helps me to find ...READ MORE

Jan 17 in Web Development by anonymous
• 11,890 points
48 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 in Java-Script by Niroj
• 23,950 points
23 views
0 votes
1 answer

How can I send a message to a particular client with socket.io?

Hii, You can try the code below: io.to(socket.id).emit("event", data); whenever ...READ MORE

answered Apr 27 in Java-Script by Niroj
• 23,950 points
73 views