Ethereum web3.js and Hex data understanding **
As a creator using Web3.js, you may have encountered problems when you get six -haired data from operations. In this article, we will go into the concept of Web3.js TX object and hexagonal data and investigate how to overcome common problems.
What is web3.js?
Web3.js is a JavaScript Library for interacting with Ethereum Blockchain. This provides the API and a set of utilities on the Decentralized Programs (DAPPS) development on Ethereum. Working with operations, Web3.JS uses an object TX to show the operation sent by blockchain.
HEX data Web3.js Operations
Hex data is used to reflect the data from raw operations stored in blockchain. This is a line of hexadecimal characters that contain information about surgery, such as its bags, useful loads and other information. Web3.js these six -haired data are inserted into the TX object.
TX object and six -haired data
When you create a new operation using Web3.js, the object TX is initiated with several features:
- ‘From’: The sender’s address
- To: the address of the recipient
- Chainid: Ethereum Blockchain Network ID (in your case, 44445)
meaning ': the amount to be handed over
However, when you print or register the sixth -hobble data related to this operation, using methods such as console.log (TX.RawtransACTION.HEX), it looks like a line of hearing characters. But if we dig deeper, we see that this is actually raw six -haired data depicting the operation itself.
Problem: Hidden hexagonal data
Suppose you are trying to extract specific information from HEX data using methods such as Json.Pars () or Hex2abiaddr (). When you do this, you may face problems because these features cannot directly analyze the inserted hexagonal data on the TX object.
Why is this going?
The reason why your Hex data seems to be hidden is that web3.js uses a specific coding scheme to store operation data on blockchain. This coding scheme includes inserted hexagonal data as part of the useful cargo of surgery, not as a separate bytes.
In other words, when you print or register TX.RawtransACTION.HEX, you actually print untreated hexagonal data from Ethereum network stored in a useful cargo. However, your program does not have direct access to this useful cargo, making it look like a hidden line of hexadecimal characters.
Solving a problem
You can use several solutions to solve this problem:
1
2.
- Use a different coding scheme : If you are developing a custom program, you may need to implement your coding scheme to store and transmit operations.
CODE EXAMPLE
Here’s an example of the code fragment that shows how to use integrated Web3.js methods to obtain six -haired data:
`Javascript
Const Web3 = Require (‘Web3’);
// Create a new copy of Web3
Const Web3 = New Web3 ();
// Get current specimens of Ethereum provider
Const provider = wait for web3.eth.getProvider ();
CONST TX = {
From: ‘0x1234567890abcdef’,
to: ‘0x9876543210Fedcba’,
Chainid: 44445,
Meaning: ‘1.2 ether’
};
// Pull the hexagonal data using Web3.js built -in methods
CONST RAWTRANSACTION = Wait for the provider.eth.sendrawtransACTION (TX);
CONST TXHEX = Wait for Web3.eth.abitoHEX (RAWTRANSACTION.RAWTRACHION);
console.log (txhex); // print out the pulled six -haired data
// or can you use:
CONST TXDATA = RAWTRANSACTION.RAWTRANSACTION;
Const hex = web3.utils.