Filtering keeps the items that match
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JavaScript Builder Lab · Lesson 9 of 12
Filtering and Searching Small Data
Build small filtering and search behavior for lists so pages respond to what people want to see.
Academy Plus
4 practice exercises
1 homework item
What you will learn
- Explain filtering as keeping only the items that match a rule.
- Read, trim, and lowercase a search term before comparing it with item text.
- Use filter and includes with small local arrays.
- Render matching results and handle an empty no-results state.
- Keep the original dataset safe while showing a filtered view.
Lesson shape
22 minute lesson with 7 sections, 4 exercises, 4 checkpoint questions, and 1 homework submission.
This track requires the Academy Plus plan.
Lesson outline
What this lesson includes
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A search term comes from input
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filter and includes work together
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Filtering and rendering are a pair
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Useful beginner search behavior
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Common filtering mistakes
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Small data prepares you for state
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Homework
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Text response
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Filtering and Searching Small Data: quick check
Write a short beginner explanation of the main idea from Filtering and Searching Small Data.
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Finish this lesson, then move forward without losing your place.
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