How to get the name of args on parsetransaction?

[daron4ever]

I can get the the value of args like the follow.

decodedInput = abi.parseTransaction({ data value });
fnValue = Number(decodedInput.args[0]);

I have no idea how to get the name of the args. I've searched the document, but I couldn't find it.
I'll appreciate your help.

[ricmoo]

Are you trying to decide the data? You will need to use the ABI to decode that. If you can include a better example, we can help more. :)

[daron4ever]

Are you trying to decide the data? You will need to use the ABI to decode that. If you can include a better example, we can help more. :)

For example,

data = "0x095ea7b3000000000000000000000000a80240eb5d7e05d3f250cf000eec0891d00b51ccffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff"

Then we can know the function name is "approve", decoded by decodedInput.name;
And the first value (data) of args is "0xa80240Eb5d7E05d3F250cF000eEc0891d00b51CC", which is decoded by

fnValue = (decodedInput.args[0]);

I would like to get the name of value, which is "spender" here.

[ricmoo]

If your ABI specifies an ABI which includes the name then both decodedInput.args[0] and decodedInput.approve will give you the same value, but your ABI must include that data.

If you want to programmatically access the parsed ABI, you can use the interface.getFunction("approve").inputs which will return an array of Fragments, which allows for further inspection of names and other properties.