process.argv for command line arguments in Node.js - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to print all command line arguments.

Node.js

console.log(process.[1]);

Drag options to blanks, or click blank then click option'

Aargv

Bargs

Cparams

Dinput

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'args' instead of 'argv'.

Trying to access a non-existent property like 'params'.

The process.argv array contains all command line arguments passed to a Node.js script.

2fill in blank

medium

Complete the code to print the third command line argument.

Node.js

console.log(process.argv[[1]]);

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A0

B1

C3

D2

Attempts:

3 left

💡 Hint

Common Mistakes

Using index 1 which is the script path.

Using index 0 which is the Node.js executable path.

The first two elements of process.argv are the Node.js executable path and the script path. The third element (index 2) is the first user argument.

3fill in blank

hard

Fix the error in the code to correctly access the command line arguments array.

Node.js

const args = process.[1];
console.log(args);

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Aargv

Bargvs

Carguments

Dargs

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'arguments' which is not a property of process.

Using 'argvs' which is a typo.

The correct property to access command line arguments is argv, not 'arguments' or 'args'.

4fill in blank

hard

Fill both blanks to print the number of user arguments passed (excluding Node and script paths).

Node.js

const userArgsCount = process.[1].[2] - 2;
console.log(userArgsCount);

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Aargv

Blength

Csize

Dcount

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'size' or 'count' which are not array properties.

Not subtracting 2 to exclude the first two elements.

process.argv is an array, so use length to get its size. Subtract 2 to exclude Node and script paths.

5fill in blank

hard

Fill all three blanks to create an array of user arguments (excluding Node and script paths).

Node.js

const userArgs = process.[1].[2]([3]);
console.log(userArgs);

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Aargv

Bslice

C2

Dsplice

Attempts:

3 left

💡 Hint

Common Mistakes

Using splice which modifies the original array.

Using wrong starting index like 0 or 1.

process.argv is an array. Use slice(2) to get a new array starting from index 2, which excludes Node and script paths.