Node.js Fundamentals · The Node Runtime · Lesson 2 of 13
Running Scripts and process.argv
Concept
Running Scripts and process.argv
Node scripts run with the node command followed by a filename. process.argv gives you access to command-line arguments passed in.
By the end of this lesson
- Explain the core idea behind Running Scripts and process.argv.
- Predict output before running a change.
- Test one realistic and one unusual input.
- Use the result to make the next decision.
How to study this page
- 1. Read one concept.
- 2. Change the example.
- 3. Run, compare, and explain.
- 4. Complete the challenge below.
ExampleRunnable
const args = process.argv.slice(2);
console.log("Arguments:", args);Self-check before continuing
Without looking at the example, describe what changes when you modify one input in Running Scripts and process.argv. Then reopen the editor and prove your explanation with a small test.
You are ready to continue when you can predict, test, and explain the result.
Your turn
Explain what process.argv.slice(2) removes and why.
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Console