how to deal with bytes32 to string in javascript?

Question

I am going to set a email address from users and going to save it to ethereum network.

I kept email as bytes32 in smart contract and when I am sending the value to javascript i am getting always a same bytes . when i use to convert to ascii I am getting '@' everytime. what can be the reason?

In the smart contract, you write a (hard-coded) string literal, for example, "me@gmail.com"? — goodvibration, Nov 08 '18 at 11:22
Or are you sending this value from the off-chain (Javascript) to the contract? — goodvibration, Nov 08 '18 at 11:25

score 3 · Answer 1 · answered Nov 08 '18 at 11:32

3

If you're on web3 v0.x, then:

Use web3.fromAscii before you send the string to the smart contract
Use web3.toAscii after you read the string from the smart contract

If you're on web3 v1.x, then:

Use web3.utils.asciiToHex before you send the string to the smart contract
Use web3.utils.hexToAscii after you read the string from the smart contract

answered Nov 08 '18 at 11:32

goodvibration

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how can i see the verson of web3 – Raonak Islam Niloy Nov 08 '18 at 11:57
@RaonakIslamNiloy: https://ethereum.stackexchange.com/a/51020/16043 – goodvibration Nov 08 '18 at 13:17

how to deal with bytes32 to string in javascript?

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