All Questions
19 questions
2
votes
1
answer
551
views
Wait for incoming ethereum transactions and credit them after n confirmations
I'm trying to create a website where users can deposit ethereum. For my server I'm using node.js and express.js. I looked into web3.js but the docs are unclear to me and I don't know which functions ...
- 63
0
votes
0
answers
54
views
Optimizing ETH transaction code
I am using the below code for executing ETH transactions with web3.js
Is it an optimized code? is there any room for improvements, what else can I add, or how can I handle exceptions/errors
const ...
- 3
2
votes
1
answer
6k
views
Best way to decode transaction input on the client side
I need to decode transaction input on the client side. Libraries like ethereum-input-data-decoder needs NodeJS dependencies like fs.
Now I decode the one type of contract methods as follows:
const ...
- 177
0
votes
1
answer
2k
views
web3.eth.getBlock("latest") giving no object in the block!
I am trying to get the numbers of transactions in a rinkeby testnet in the last block
I wrote the following code
var Web3 = require('web3');
const Project_ID_Infura = 'write your own Infura ID';
...
- 287
1
vote
1
answer
954
views
Send transaction throw bsc with web3
i'm trying to send a transaction via bsc using WalletConnect and web3
This is the connection code
const provider = new WalletConnectProvider({
rpc: {
1: "https://bsc-dataseed.binance....
6
votes
2
answers
13k
views
tx fee (2.11 ether) exceeds the configured cap (1.00 ether), how to bypass default cap?
I'm getting this error when trying to make a simple ETH(BNB) transaction with very high gas, I've tried using different scripts with both web3 and ethers.js and both throw the same error on the BSC ...
- 61
0
votes
1
answer
3k
views
Web3.js Batch Request Limit?
I'm trying out Batch Request provided by web3.js. In the example below I want to test making 300 transactions but i get the error log displayed below. I'm trying to figure out the error log but it ...
- 390
1
vote
1
answer
179
views
Exit process after sending multiple tx asynchronously
I have written a function that allows me to send an arbitrary amount of transactions, asynchronously, to my smart contract. However the process stays open even after the last transaction has finished. ...
- 390
2
votes
1
answer
480
views
How to retrieve transaction hash value from the Promise object using web3js?
I'm trying to retrieve the transaction hash value after I call my smart contract method.
My Promise object looks like below.
returnPromise:
Promise { "pending" }
<state>: "...
- 49
12
votes
4
answers
16k
views
How to get events emitted by a transaction with web3.js
I'm writing a user interface in Javascript and I'm using the web3.js library.
I have the transaction hash of a confirmed transaction. I would like to get an array of all events emitted by that ...
- 10.5k
0
votes
1
answer
201
views
Get lastest input transaction of the account
I am trying to get the recent IN transaction of the account
while i try
web3.eth.getTransactionCount("0xF092966e7bcc2b5646e0F0c20A715584DB37cd4B").then(function(trans){
console.log(trans);
});
...
- 229
2
votes
2
answers
480
views
Transmit array as first parameter in web3.js
When I develop in solidity combined with web3.js, I face some problem recently. I create a contract code below
//setContractDetail(index,bool isConsentItem,uint8[] detailItems)
function ...
- 23
0
votes
2
answers
763
views
What happens when we use "callback" in a function ? and when do we need to use it?
What happens when we use "callback" as a keyword in a function ? And when do we need to use it ? and what happens if we do not use it ? For example in the following JavaScript code:
function ...
- 2,700
1
vote
2
answers
1k
views
web3.toAscii(transaction hash) for web3js version 1
When i used web3.toAscii I received the following error :
I think the reason is my web3 version i.e. '1.0.0-beta.34'
If so, is there any alternative command for web3 version 1 for the following ...
- 2,700
0
votes
1
answer
495
views
Creating a transaction from a webform - invalid number of args
I have a HTML web page where I am feeding user entries into a smart contract that is designed to "store" the entries in transactions. I have most of the application working, but I'm having trouble ...
- 65
60
votes
6
answers
126k
views
error: replacement transaction underpriced
Im trying to send a raw transaction using web3 to ropsten testnet and Im getting this error:
replacement transaction underpriced
where sometimes my tx works and sometimes I get this error.
my tx ...
- 845
4
votes
2
answers
532
views
Web3 Javascript API -- Transaction Object Not Matching Documentation
Noob question about the Web3 Javascript API.
When I use web3.eth.getTransaction(), the object that comes back has some properties that I cannot seem to find in the documentation. For example, here is ...
- 253
3
votes
1
answer
130
views
Isn't there an unlockAndSendTransaction function in web3 JavaScript API?
I really believe that I saw a function named unlockAndSendTransaction on a web3 Javascript API reference page somewhere on Friday 12/09/2016 but today (Monday, 12/12/2016), I am unable to find this ...
- 1,446
4
votes
1
answer
375
views
Contract code not executing from web3, works from Mist
I seem to be having a problem w/ contract code not executing when called from web3 (works when called from mist). The Eth goes to the contract, so I know it is making the call at least. I am calling ...
- 183