FormDatabeginner

FormData — has() returns true after append

📖 Usage Example

const fd = new FormData()
fd.append('k', 'v')
fd.has('k')  // → true

has() returns true if the given key exists in the FormData.

FormData.has()

has(name) returns true if the key exists in the FormData.

Challenge: Append key 'x' and verify that has('x') returns true.

💡 Hints (1)

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