CODEWITHSUNDEEP
node.js
jcb1032
jcb1032

Reputation: 627

Node.JS reading data from console command

I remember using something before in node.js that would allow me to run a command like

node appname.js text goes here

and then read the "text goes here" part with something like

console.log(console.text)

I can't remember what it is, and can't find it in any searches. Was this a real thing, or just me dreaming?

Upvotes: 1

Views: 889

Answers (2)

Ravi Shankar Bharti
Ravi Shankar Bharti

Reputation: 9268

You can use process.argv to console the input from command line.

If you run below command in terminal/command line:

node appname.js text goes here.

You can print the command line arguments by:

console.log(process.argv)

Output of above console will be:

['node',
'/home/user/path/to/appname.js',
'text',
'goes',
'here' ]

If you dont want first two text, you can use:

console.log(process.argv.slice(2))

Output of above console will be:

['text',
'goes',
'here' ]

Read this link for more info.

Hope this helps you out!!!

Upvotes: 1

halilcakar
halilcakar

Reputation: 1648

Well there is lot's ways/packages around for reading from arguments.

the nodejs process is the base of it so check here

And also as i said lot's of packages there for parsing arguments.

yargs is one of them, minimist is also a populer one as far as i know.

If you don't want t use a package basicly it starts like this:

// inside node file

const args = process.argv.splice(2);
console.log(args);
// we are splice'ing from 2 cause 
// process.argv[0] is your node-path
// process.argv[1] is your js file's full path
// Most of the time we are not using those so :)

So hope these would work for you ☺

Upvotes: 2

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