Decimal strings do no work as BlockTags.

[ayushch80]

Ethers Version

5.2.0

Search Terms

PROVIDERS

Describe the Problem

GET DATA ENTERED BY USER AND USED IT const block = provider.getBlock(blockData)

Code Snippet

HTML --
<input type="text" class="form-control" placeholder="Enter Block Number here" aria-label="block_number" aria-describedby="block" id="block" oninput="this.value = this.value.replace(/[^0-9.]/g, '').replace(/(\..*?)\..*/g, '$1').replace(/^0[^.]/, '0');">

JS--
 { ethers } from "https://cdn.ethers.io/lib/ethers-5.2.esm.min.js";

document.getElementById("btn_click").addEventListener("click", getData);
function getData() {
  
  const bData = document.getElementById("uData");
  const rpcUrl = bData.elements.namedItem("rpc").value;
  const blockData = bData.elements.namedItem("block").value;

  const provider = new ethers.providers.JsonRpcProvider(rpcUrl);
  const block = provider.getBlock(blockData)

  const blockHash = block.hash
  
  $('.rpcU').append("<p><b>ENTERED JSON RPC URL --></b>" + rpcUrl + "</p>");
  $('.blockD').append("<h4>BLOCK DATA</h4><p><b>Block Number</b>" + blockData + "<br><b>BLOCK HASH</b>" + blockHash + "</p>");
}

Contract ABI

No response

Errors

Uncaught (in promise) Error: invalid block hash or block tag (argument="blockHashOrBlockTag", value="0", code=INVALID_ARGUMENT, version=providers/5.2.0)

Environment

Browser (Chrome, Safari, etc)

Environment (Other)

No response

[ricmoo]

The string "0" isn’t a valid block tag; you either need a canonical name (like "latest"), a 0x-prefixed string or a number.

It might be possible to also allow allow string decimal values, but that would likely not be until a minor bump.

For now you can use provider.getBlock(parseInt(blockData)) though. :)

[ayushch80]

after making changes that u suggested

[ricmoo]

That’s still a string by the looks of it? Also, you are using a very old version of ethers. Can you update to 5.6.8?

[ayushch80]

Now it's not displaying any errors but still showing block hash as undefined

Can you please suggest me in a piece of code that how should I proceed

[ayushch80]

Sir expecting a reply

[zemse]

  const block = provider.getBlock(blockData)
  const blockHash = block.hash

You need to use const block = await provider.getBlock(blockData)

[ayushch80]

@zemse thanks :)