function approve(address to, uint256 tokenId) external nonpayable
Gives permission to to to transfer tokenId token to another account. The approval is cleared when the token is transferred. Only a single account can be approved at a time, so approving the zero address clears previous approvals. Requirements: - The caller must own the token or be an approved operator. - tokenId must exist. Emits an {Approval} event.
Parameters
Name
Type
Description
to
address
undefined
tokenId
uint256
undefined
balanceOf
function balanceOf(address owner) external view returns (uint256 balance)
Returns the number of tokens in owner's account.
Parameters
Name
Type
Description
owner
address
undefined
Returns
Name
Type
Description
balance
uint256
undefined
getApproved
function getApproved(uint256 tokenId) external view returns (address operator)
Returns the account approved for tokenId token. Requirements: - tokenId must exist.
Parameters
Name
Type
Description
tokenId
uint256
undefined
Returns
Name
Type
Description
operator
address
undefined
isApprovedForAll
function isApprovedForAll(address owner, address operator) external view returns (bool)
Returns if the operator is allowed to manage all of the assets of owner. See {setApprovalForAll}
Parameters
Name
Type
Description
owner
address
undefined
operator
address
undefined
Returns
Name
Type
Description
_0
bool
undefined
name
function name() external view returns (string)
Returns the token collection name.
Returns
Name
Type
Description
_0
string
undefined
ownerOf
function ownerOf(uint256 tokenId) external view returns (address owner)
Returns the owner of the tokenId token. Requirements: - tokenId must exist.
Parameters
Name
Type
Description
tokenId
uint256
undefined
Returns
Name
Type
Description
owner
address
undefined
safeTransferFrom
function safeTransferFrom(address from, address to, uint256 tokenId) external nonpayable
Safely transfers tokenId token from from to to, checking first that contract recipients are aware of the ERC721 protocol to prevent tokens from being forever locked. Requirements: - from cannot be the zero address. - to cannot be the zero address. - tokenId token must exist and be owned by from. - If the caller is not from, it must have been allowed to move this token by either {approve} or {setApprovalForAll}. - If to refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. Emits a {Transfer} event.
Parameters
Name
Type
Description
from
address
undefined
to
address
undefined
tokenId
uint256
undefined
safeTransferFrom
function safeTransferFrom(address from, address to, uint256 tokenId, bytes data) external nonpayable
Safely transfers tokenId token from from to to. Requirements: - from cannot be the zero address. - to cannot be the zero address. - tokenId token must exist and be owned by from. - If the caller is not from, it must be approved to move this token by either {approve} or {setApprovalForAll}. - If to refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. Emits a {Transfer} event.
Parameters
Name
Type
Description
from
address
undefined
to
address
undefined
tokenId
uint256
undefined
data
bytes
undefined
setApprovalForAll
function setApprovalForAll(address operator, bool approved) external nonpayable
Approve or remove operator as an operator for the caller. Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller. Requirements: - The operator cannot be the caller. Emits an {ApprovalForAll} event.
Parameters
Name
Type
Description
operator
address
undefined
approved
bool
undefined
supportsInterface
function supportsInterface(bytes4 interfaceId) external view returns (bool)
Returns true if this contract implements the interface defined by interfaceId. See the corresponding https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section] to learn more about how these ids are created. This function call must use less than 30 000 gas.
Parameters
Name
Type
Description
interfaceId
bytes4
undefined
Returns
Name
Type
Description
_0
bool
undefined
symbol
function symbol() external view returns (string)
Returns the token collection symbol.
Returns
Name
Type
Description
_0
string
undefined
tokenURI
function tokenURI(uint256 tokenId) external view returns (string)
Returns the Uniform Resource Identifier (URI) for tokenId token.
Parameters
Name
Type
Description
tokenId
uint256
undefined
Returns
Name
Type
Description
_0
string
undefined
transferFrom
function transferFrom(address from, address to, uint256 tokenId) external nonpayable
Transfers tokenId token from from to to. WARNING: Note that the caller is responsible to confirm that the recipient is capable of receiving ERC721 or else they may be permanently lost. Usage of {safeTransferFrom} prevents loss, though the caller must understand this adds an external call which potentially creates a reentrancy vulnerability. Requirements: - from cannot be the zero address. - to cannot be the zero address. - tokenId token must be owned by from. - If the caller is not from, it must be approved to move this token by either {approve} or {setApprovalForAll}. Emits a {Transfer} event.