JSON Best Practices

Use camelCase for keys in JavaScript contexts, ISO 8601 for dates, and validate schema on both client and server.

Example

// Good JSON API response structure
{
  "data": {
    "id": 1,
    "userName": "alice",    // camelCase
    "createdAt": "2024-06-15T10:30:00Z"  // ISO 8601
  },
  "meta": {
    "total": 100,
    "page": 1,
    "perPage": 20
  },
  "errors": null
}

// Consistent error format
{
  "errors": [
    { "field": "email", "message": "Invalid email address" }
  ]
}

JSON

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Pro Tip

Establish a consistent JSON response envelope (data, meta, errors) across all API endpoints for predictable handling.

Related Resources

JavaScript Reference

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JavaScript How-To Guides

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JavaScript Exercises

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