Easy

08. String Slicing, Methods & Masking

Problem Objective

Write a function maskApiKey(key) that displays only the first 4 and last 4 characters, replacing the middle with ****.

Expected Terminal OutputStandard Out

Masked: live****9999

[✓] String mask verified (Time: 0.036s, Memory: 24.4 MB)

Execution Constraints

Implementation Checklist

Extract first 4 with sliceExtract last 4 with slice(-4)Combine with ****

index.jsnode 20.x (V8 Engine)

Loading Bytes Space Editor...