decodeParameter

Callable

• decodeParameter(abi: AbiInput, bytes: string): unknown

---

• Decodes an ABI encoded parameter to its JavaScript type.

  @example

    const res = web3.eth.abi.decodeParameter(
     "uint256",
     "0x0000000000000000000000000000000000000000000000000000000000000010"
   );
   console.log(res);
  > 16n
  
   const res = web3.eth.abi.decodeParameter(
     "string",
     "0x0000000000000000000000000000000000000000000000000000000000000020000000000000000000000000000000000000000000000000000000000000000848656c6c6f212521000000000000000000000000000000000000000000000000"
   );
  
   console.log(res);
   > Hello!%!
  
   const res = web3.eth.abi.decodeParameter(
     {
       ParentStruct: {
         propertyOne: "uint256",
         propertyTwo: "uint256",
         childStruct: {
           propertyOne: "uint256",
           propertyTwo: "uint256",
         },
       },
     },
     "0x000000000000000000000000000000000000000000000000000000000000002a0000000000000000000000000000000000000000000000000000000000000038000000000000000000000000000000000000000000000000000000000000002d000000000000000000000000000000000000000000000000000000000000004e"
   );
  
   console.log(res);
    {
   '0': 42n,
   '1': 56n,
   '2': {
     '0': 45n,
     '1': 78n,
     __length__: 2,
     propertyOne: 45n,
     propertyTwo: 78n
   },
   __length__: 3,
   propertyOne: 42n,
   propertyTwo: 56n,
   childStruct: {
     '0': 45n,
     '1': 78n,
     __length__: 2,
     propertyOne: 45n,
     propertyTwo: 78n
   }
  }

  ---

  Parameters

  • abi: AbiInput

    The type of the parameter. See the Solidity documentation for a list of types.

  • bytes: string

    The ABI byte code to decode

  Returns unknown

  • The decoded parameter