URLSearchParamsbeginner

URLSearchParams#append() — adds without removing existing

📖 Usage Example

const p = new URLSearchParams('a=1')
p.append('a', '2')
p.getAll('a')  // → ['1', '2']

append() adds a new value for a key without removing existing ones.

URLSearchParams#append()

params.append(name, value) adds a new key-value pair without removing existing entries for that key.

Challenge: Verify append() preserves existing entries.

💡 Hints (1)

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