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Javascript API and library for Ethereum To develop applications on Ethereum, you can use the web3 object provided by the web3.js library. Under the hood it communicates to a local node through RPC calls. web3.js works with any Ethereum node, which exposes an RPC layer. https://github.com/ethereum/wiki/wiki/JavaScript-API

5 votes
2 answers
2k views

How can I tell from raw transaction data if it succeeded or failed?

I am getting into a bit of chain analysis and am using web3.eth.getTransaction('0x8ab08c56c46ca42091ec44c7c9148fe5eb6e0355eeffb29acb5f6c3326139f9e') to get the following transaction details: { blockH …
Steve's user avatar
  • 346
3 votes
2 answers
2k views

Best tutorial for developing Daaps that work with Metamask? [duplicate]

I have my smart contract deployed and all I need to do now is build a convenient UI that works with Chrome and Metamask. My benchmark Dapp is Etherdeta which was build using nothing but jquery. What i …
Steve's user avatar
  • 346
2 votes
1 answer
883 views

Metamask injected web3 unreliable

I am using node with express to serve HTML and JS files to port 3000. Sometimes the injected web3 get's recognised and things work fine and other times it does not. Strange things is that after page i …
Steve's user avatar
  • 346
1 vote
1 answer
1k views

Pending/mined transaction dapp UI feedback using Metamask?

So I have deployed a smart contract and can interact with it via a web UI using web3.eth.contract(abi).at(address) and Metamask - so far so good. However, between a transaction being submitted and it …
Steve's user avatar
  • 346
0 votes
1 answer
2k views

http: Accept error: accept tcp 127.0.0.1:8545: accept: too many open files; retrying in 5ms

I am running geth -rpc and node to directly interact with the blockchain. When executing a large amount of requests I noticed the following error: http: Accept error: accept tcp 127.0.0.1:8545: accep …
Steve's user avatar
  • 346