The allowance
function in the ERC20 contract retrieves the amount of tokens that an owner has allowed a spender to use on their behalf. It returns the allowance as a uint256
value, which represents the maximum number of tokens the spender can transfer from the owner's account.
owner
(address
): The address of the token holder whose allowance is being queried.spender
(address
): The address of the account that is allowed to spend the owner's tokens.uint256
: The function returns the allowance amount that the spender
is allowed to spend on behalf of the owner
.