tokenOfOwnerByIndex
tokenOfOwnerByIndex is a function in the ERC-721 Enumerable extension that enables enumeration of tokens owned by a specific address. It allows external applications to retrieve the token ID at a given position within the set of tokens owned by an address, facilitating per-owner token listing.
The function has the signature: function tokenOfOwnerByIndex(address owner, uint256 index) external view returns (uint256 tokenId). It
Implementation typically relies on internal data structures that map each owner to an indexed list of their
Use cases include wallets, explorers, and marketplaces that need to display or iterate over the tokens owned
Considerations include gas and performance implications for on-chain calls that enumerate large collections; since the function