getFunctionSelector
Returns the function selector (4 byte encoding) for a given function definition.
Install
ts
import { getFunctionSelector } from 'viem'Usage
ts
import { getFunctionSelector } from 'viem'
const selector = getFunctionSelector('function ownerOf(uint256 tokenId)')
// 0x6352211e
const selector = getFunctionSelector('ownerOf(uint256)')
// 0x6352211e
// or from an `AbiFunction` on your contract ABI
const selector = getFunctionSelector({
name: 'ownerOf',
type: 'function',
inputs: [{ name: 'tokenId', type: 'uint256' }],
outputs: [],
stateMutability: 'view',
})
// 0x6352211eReturns
The selector as a hex value.
Parameters
function
- Type:
string |AbiFunction
The function to generate a selector for.