[Solved] What will be the output of this Remix loader if the URL has no q parameter? export async function loader({ request }) { const url = new URL(request.url); const q = url.searchParams.get('q') || '';... | Remix

Remix - Advanced Patterns

What will be the output of this Remix loader if the URL has no q parameter?

export async function loader({ request }) {
  const url = new URL(request.url);
  const q = url.searchParams.get('q') || '';
  const items = ['pen', 'pencil', 'paper'];
  const filtered = items.filter(item => item.includes(q));
  return json({ filtered });
}

A{"filtered": []}

B{"filtered": ["pen", "pencil", "paper"]}

C{"filtered": [""]}

DError: q is undefined

Step-by-Step Solution

Solution:

Step 1: Handle missing query parameter
If q is missing, fallback to empty string.
Step 2: Filter items with empty string
Filtering with empty string returns all items because every string includes ''.
Final Answer:
All items are returned in filtered array. -> Option B
Quick Check:
Empty query returns all items [OK]

Quick Trick: Empty query string matches all items in filter [OK]

Common Mistakes:

MISTAKES

Expecting empty array on missing query
Not providing default empty string
Assuming error on missing parameter

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What will be the output of this Remix loader if the URL has no q parameter?

Step 1: Handle missing query parameter

Step 2: Filter items with empty string

Final Answer:

Quick Check:

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