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toFunctionSelector

Returns the function selector (4 byte encoding) for a given function definition.

Install

import { toFunctionSelector } from 'viem'

Usage

import {  } from 'viem'
 
const  = ('function ownerOf(uint256 tokenId)')

Output: 0x6352211e
 const  = ('ownerOf(uint256)')

Output: 0x6352211e
 // or from an `AbiFunction` on your contract ABI
const  = ({
  : 'ownerOf',
  : 'function',
  : [{ : 'tokenId', : 'uint256' }],
  : [],
  : 'view',
})

Output: 0x6352211e

Returns

Hex

The selector as a hex value.

Parameters

function

The function to generate a selector for.

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