abi.encodeParamsV2ByABI

This method supports encode input params of function's abi into hex string. It can be seen as the reverse of abi.decodeParamsV2ByABI.

Usage

tronWeb.utils.abi.encodeParamsV2ByABI(funAbi, args);

Parameters

Parameter	Description	Data Type
funAbi	The abi of a function	object contains inputs array
args	The input params	array

Returns

hex string

Example

const functionABI = {
  "constant": true,
  "outputs": [],
  "name": "test",
  "inputs": [
    {
      "name": "r0",
      "type": "string[2]"
    },
    {
      "name": "r1",
      "type": "uint128"
    },
    {
      "components": [
        {
          "name": "a",
          "type": "bytes"
        },
        {
          "name": "b",
          "type": "bytes"
        },
        {
          "name": "c",
          "type": "bytes"
        }
      ],
      "name": "r2",
      "type": "tuple"
    },
    {
      "name": "r3",
      "type": "bytes"
    }
  ],
  "payable": false,
  "stateMutability": "pure",
  "type": "function"
};
const args = [
  [
    'Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui ',
    'Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehender'
  ],
  '0xca07f722e5aead62dcccf13578',
  [
    '0xc66a151d9b0763859a67',
    '0x6e1a7e1a868b83dbbb0b9761f85b991f2ab73b5fef04476333b3fadd663d54b94e42a0354d479d0e5a9b44f7cd78bbcd',
    '0xf99eddc0917e7c94687bf18c77656aa414cfd8e9b5d0fb34e41b83ca0e1e91eecfe0fc28fe7ccc0244ebfcfd376ff63120c3c7',
  ],
  '0x47666ad90c94e7cb655d9a68acc2d45451e5b94b',
]
const result = tronWeb.utils.abi.encodeParamsV2ByABI(functionABI, args);
// the result would be:
`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`