encodeFunctionCall

Callable

• encodeFunctionCall(jsonInterface: AbiFunctionFragment, params: unknown[]): string

---

• Encodes a function call using its JSON interface object and given parameters. The JSON interface spec documentation https://docs.soliditylang.org/en/latest/abi-spec.html#json

  @example

  const sig = web3.eth.abi.encodeFunctionCall(
    {
      name: "myMethod",
      type: "function",
      inputs: [
        {
          type: "uint256",
          name: "myNumber",
        },
        {
          type: "string",
          name: "myString",
        },
      ],
    },
    ["2345675643", "Hello!%"]
  );
  console.log(sig);
  > 0x24ee0097000000000000000000000000000000000000000000000000000000008bd02b7b0000000000000000000000000000000000000000000000000000000000000040000000000000000000000000000000000000000000000000000000000000000748656c6c6f212500000000000000000000000000000000000000000000000000
  
  
  
  const sig = web3.eth.abi.encodeFunctionCall(
    {
      inputs: [
        {
          name: "account",
          type: "address",
        },
      ],
      name: "balanceOf",
      outputs: [
        {
          name: "",
          type: "uint256",
        },
      ],
      stateMutability: "view",
      type: "function",
    },
    ["0x1234567890123456789012345678901234567890"]
  );
  
  console.log(sig);
  > 0x70a082310000000000000000000000001234567890123456789012345678901234567890

  ---

  Parameters

  • jsonInterface: AbiFunctionFragment

    The JSON interface object of the function.

  • params: unknown[]

    The parameters to encode

  Returns string

  • The ABI encoded function call, which, means the function signature and the parameters passed.