List Patterns and Filtering

Let's explore common patterns for working with lists in React, including filtering, sorting, and transforming data.

Filtering Lists

Filter data before rendering:

Sorting Lists

Sort data before rendering:

Search Filtering

Implement search functionality:

Grouping Data

Group items by a property:

Pagination

Display paginated data:

Exercise: Filter and Count

Exercise: Sort Options

Exercise: Search with Highlight

Key Takeaways

1. Filter before map - Chain filter().map() for clean code
2. Sort immutably - Always spread/slice before sorting
3. Search case-insensitively - Convert to lowercase for comparison
4. Group with reduce - Build category objects efficiently
5. Paginate with slice - Calculate start/end indices for pages