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Updated: May 31, 2026

Create Array

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Conclusion

Create Array — free browser-based JavaScript practice

■ What this exercise teaches Create a fruits array with 3 elements of your choice and output it with console.log.

Why it matters in real projects

Arrays are written with square brackets and comma-separated values. Similar patterns appear daily in code review and production UI work.

Step-by-step workflow

1. Read the guide and understand the goal of "Create Array" 2. Review the JavaScript editor pane and start from the starter code 3. Open hints if stuck; compare your diff with the sample solution 4. Click Run and inspect preview/console output 5. Auto-check looks for output containing: const fruits, console.log(fruits). 6. After success, continue with adjacent exercises in the same category

Core concept explained

Arrays are written with square brackets and comma-separated values.

Technical focus

Key JavaScript APIs: console.log.

Hint before you peek at the solution

const fruits = ['apple', 'banana', 'grape'];

Sample solution walkthrough

JavaScript APIs used: console.log. Verify spelling and async/await usage. Explanation: Arrays are written with square brackets and comma-separated values. Hint recap: const fruits = ['apple', 'banana', 'grape'];

Solution code

📝 Sample code
const fruits = ['apple', 'banana', 'grape'];
console.log(fruits);

Common mistakes for this exact task

- Skipping the hint: const fruits = ['apple', 'banana', 'grape'];

Troubleshooting

Q: Preview does not change after Run A: Ensure you edited the JavaScript pane and clicked Run. Q: Looks correct but check fails A: Auto-check looks for output containing: const fruits, console.log(fruits). Look for typos, full-width spaces, or unclosed tags. Q: Console shows errors A: Open DevTools Console and fix bracket/quote mismatches at the reported line. Q: Hard to type on mobile A: Use landscape mode or continue on desktop—the same URL keeps progress in localStorage.

Interview / portfolio tips

- Explain the techniques in "Create Array" in your own words within 30 seconds - Practice walking through each line of the sample solution on a whiteboard - Connect this task to a real component you would ship - Mention responsive or accessibility trade-offs - Describe when you use: console.log

What to do after you pass

Move to the next exercise in the js-basic track, then continue the learning roadmap at /en/learning/js-basic/.

Keywords

Free hands-on exercise covering Create an array, js-basic, beginner, console.log, create array—search-friendly guide for Create Array.

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■ Exercise task

Create a fruits array with 3 elements of your choice and output it with console.log.

Hint if stuck

const fruits = ['apple', 'banana', 'grape'];

15pt

Create an array

Create a fruits array with 3 elements of your choice and output it with console.log.

Click error to highlight line. ✕=error ⚠=warning ›=log.

Roadmap · All guides

Deep dive

"Create Array" is a beginner-level JavaScript exercise. Create a fruits array with 3 elements of your choice and output it with console.log. Run it in-browser with automatic checking.

Arrays are written with square brackets and comma-separated values. Similar patterns appear daily in code review and production UI work.

Pair this with the js-basic roadmap. Exercise #24 reinforces core js-basic skills.

Step-by-step workflow

  1. Read the guide and understand the goal of "Create Array"
  2. Review the JavaScript editor pane and start from the starter code
  3. Open hints if stuck; compare your diff with the sample solution
  4. Click Run and inspect preview/console output
  5. Auto-check looks for output containing: const fruits, console.log(fruits).
  6. After success, continue with adjacent exercises in the same category

How to read the sample solution

JavaScript APIs used: console.log. Verify spelling and async/await usage. Explanation: Arrays are written with square brackets and comma-separated values. Hint recap: const fruits = ['apple', 'banana', 'grape'];

Real-world & career relevance

JS basics precede React, Vue, and Node. Variables, functions, and arrays appear in daily code review.

Common mistakes

  • Skipping the hint: const fruits = ['apple', 'banana', 'grape'];
  • Typos in console.log
  • Loose == between string and number
  • Reassigning const
  • Missing semicolons causing odd line breaks

Troubleshooting

Preview does not change after Run
Ensure you edited the JavaScript pane and clicked Run.
Looks correct but check fails
Auto-check looks for output containing: const fruits, console.log(fruits). Look for typos, full-width spaces, or unclosed tags.
Console shows errors
Open DevTools Console and fix bracket/quote mismatches at the reported line.
Hard to type on mobile
Use landscape mode or continue on desktop—the same URL keeps progress in localStorage.

Interview & portfolio tips

  • Explain the techniques in "Create Array" in your own words within 30 seconds
  • Practice walking through each line of the sample solution on a whiteboard
  • Connect this task to a real component you would ship
  • Mention responsive or accessibility trade-offs
  • Describe when you use: console.log

Glossary

const
Constant binding—no reassignment.
function
Reusable block of code.
console.log
Print to the developer console.

Keywords covered on this page

Free hands-on exercise covering Create an array, js-basic, beginner, console.log, create array—search-friendly guide for Create Array.

Related dev tools

Learning roadmap

Learning roadmap →

Related exercises

Frequently asked questions

Is "Create an array" free?

This exercise is free and runs entirely in your browser. No account or credit card required.

Difficulty and time?

"Create an array" is level "beginner". Read the guide first; beginners can usually finish within 30 minutes. Allow 5–15 minutes per exercise. Use hints, then the solution if stuck.

What after a correct answer?

After a correct answer, use "Next exercise". When you finish a category, continue on the <a href="/en/learning/js-basic/">learning roadmap</a>.

Works on mobile?

Works on mobile browsers, but typing code is easier on a desktop.

Where are other exercises?

All exercises: <a href="/en/learn/">/en/learn/</a> with category filters.

Key takeaway for "Create an array"?

Arrays are written with square brackets and comma-separated values. Hint: const fruits = ['apple', 'banana', 'grape'];

Where does JavaScript Basics fit?

JS basics precede React, Vue, and Node. Variables, functions, and arrays appear in daily code review.

Step-by-step for "Create Array"?

1. Read the guide and understand the goal of "Create Array"<br />2. Review the JavaScript editor pane and start from the starter code<br />3. Open hints if stuck; compare your diff with the sample solution<br />4. Click Run and inspect preview/console output<br />5. Auto-check looks for output containing: const fruits, console.log(fruits).<br />6. After success, continue with adjacent exercises in the same category

How to read the sample solution?

JavaScript APIs used: console.log. Verify spelling and async/await usage.<br /><br />Explanation: Arrays are written with square brackets and comma-separated values.<br /><br />Hint recap: const fruits = ['apple', 'banana', 'grape'];

Something is not working?

<strong>Preview does not change after Run</strong> → Ensure you edited the JavaScript pane and clicked Run.<br /><strong>Looks correct but check fails</strong> → Auto-check looks for output containing: const fruits, console.log(fruits). Look for typos, full-width spaces, or unclosed tags.<br /><strong>Console shows errors</strong> → Open DevTools Console and fix bracket/quote mismatches at the reported line.<br /><strong>Hard to type on mobile</strong> → Use landscape mode or continue on desktop—the same URL keeps progress in localStorage.

Career / interview angle?

Explain the techniques in "Create Array" in your own words within 30 seconds Practice walking through each line of the sample solution on a whiteboard Connect this task to a real component you would ship Mention responsive or accessibility trade-offs Describe when you use: console.log

Related dev tools?

<a href="/en/tools/json-formatter/">JSON Formatter</a>, <a href="/en/tools/regex/">Regex Tester</a>

Prerequisites?

Read the <a href="/en/learning/js-basic/">Learning roadmap</a> chapter first.

Can I change the starter code?

Yes—if it works. Understanding the starter first, then adding minimal diffs, speeds up learning.

What do the points mean?

15pt is a difficulty hint, not a score you must maximize.