[Solved] You receive this JSON string from an API:{"user": "Bob", "age": 25,}What is wrong with this JSON? — Ans: Trailing comma after the last item is invalid | Rest API

Rest API - Request and Response Format

You receive this JSON string from an API:

{"user": "Bob", "age": 25,}

What is wrong with this JSON?

ATrailing comma after the last item is invalid

BKeys must be numbers, not strings

CValues cannot be numbers

DMissing square brackets around the object

Step-by-Step Solution

Solution:

Step 1: Check JSON syntax rules
JSON objects cannot have a comma after the last key-value pair.
Step 2: Identify the error in the string
The comma after "age": 25 is invalid and causes a syntax error.
Final Answer:
Trailing comma after the last item is invalid -> Option A
Quick Check:
No trailing commas allowed in JSON objects [OK]

Quick Trick: No commas after last item in JSON objects [OK]

Common Mistakes:

MISTAKES

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