JS Built-ins
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Errorintermediate

Error types — RangeError on invalid array length

📖 Usage Example
class NetworkError extends Error {
  constructor(msg) { super(msg); this.name = 'NetworkError' }
}

Extend Error to create application-specific error types with custom names.

RangeError on new Array(-1)

Creating an array with a negative length throws a RangeError.

Challenge: Verify the error is thrown.

💡 Hints (1)
  • • Array() with a negative length argument throws a RangeError.