URLSearchParamsbeginner

URLSearchParams#has() — check key existence

📖 Usage Example

const p = new URLSearchParams('a=1')
p.has('a')  // → true
p.has('z')  // → false

has() checks whether a given key exists in the parameters.

URLSearchParams#has()

params.has(name) returns true if the key exists, false otherwise.

Challenge: Use has() to check for key presence.

💡 Hints (1)

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