encodeParameter

Callable

• encodeParameter(abi: AbiInput, param: unknown): string

---

• Encodes a parameter based on its type to its ABI representation.

  @example

   const res = web3.eth.abi.encodeParameter("uint256", "2345675643");
   console.log(res);
   0x000000000000000000000000000000000000000000000000000000008bd02b7b
  
   const res = web3.eth.abi.encodeParameter("uint", "2345675643");
  
   console.log(res);
   >0x000000000000000000000000000000000000000000000000000000008bd02b7b
  
     const res = web3.eth.abi.encodeParameter("bytes32", "0xdf3234");
  
   console.log(res);
   >0xdf32340000000000000000000000000000000000000000000000000000000000
  
    const res = web3.eth.abi.encodeParameter("bytes", "0xdf3234");
  
   console.log(res);
   > 0x00000000000000000000000000000000000000000000000000000000000000200000000000000000000000000000000000000000000000000000000000000003df32340000000000000000000000000000000000000000000000000000000000
  
    const res = web3.eth.abi.encodeParameter("bytes32[]", ["0xdf3234", "0xfdfd"]);
  
   console.log(res);
   > 0x00000000000000000000000000000000000000000000000000000000000000200000000000000000000000000000000000000000000000000000000000000002df32340000000000000000000000000000000000000000000000000000000000fdfd000000000000000000000000000000000000000000000000000000000000
  
   const res = web3.eth.abi.encodeParameter(
     {
       ParentStruct: {
         propertyOne: "uint256",
         propertyTwo: "uint256",
         childStruct: {
           propertyOne: "uint256",
           propertyTwo: "uint256",
         },
       },
     },
     {
       propertyOne: 42,
       propertyTwo: 56,
       childStruct: {
         propertyOne: 45,
         propertyTwo: 78,
       },
     }
   );
  
   console.log(res);
   > 0x000000000000000000000000000000000000000000000000000000000000002a0000000000000000000000000000000000000000000000000000000000000038000000000000000000000000000000000000000000000000000000000000002d000000000000000000000000000000000000000000000000000000000000004e

  ---

  Parameters

  • abi: AbiInput

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

  • param: unknown

    The actual parameter to encode.

  Returns string

  • The ABI encoded parameter