FormDatabeginner

FormData — has() returns false for missing key

📖 Usage Example

const fd = new FormData()
fd.append('a', '1')
fd.delete('a')
fd.has('a')  // → false

delete() removes all values associated with the given key.

FormData.has() — missing key

has(name) returns false when the key does not exist.

Challenge: Verify that has('missing') returns false on an empty FormData.

💡 Hints (1)

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