# EASY WEB 3
Package that simplifies the use of web3:
## Avaiable functions:
```
setProvider (host): init the web3 instance and everything needed
setDefaultAccount (account): change the deffault account
getWeb3Instance (): check web3 instance up
getAddress (contrato): return the address from a truffle contract object
getContractInstance (abi, address, web3Instance): return a javascript instance of the contract at address
blkListenAllEventsWithFilter (contractInstance, callback, filterParam, filterValue): Get all the event instances in the blockchain
blkListenAllEventsContinuously (contractInstance, callback): Listen to event instances continuously
blkListenAllEventsOnce (contractInstance, callback):
jsethContractFromTruffle (_truffleBuild, callback): returns a jseth contract object from a truffle build json
jsethAccountGenerate (): generate an account object to use in ethereum
jsethAccountGet (address): instance an account object from a known account
printEventLog (instanceEvent)
encodePayload (abiFoo, args, callback): encode a paload to a bytes array to use in forwarded transactions
signTransaction (nonce, gasPrice, gasLimit, to, value, data, chainId, privateKey): sign a transaction out of the node. data can be get from the contract jseth object encode method
```
##Examples:
```
var SCController = require('easyweb3');
var AccountAddress = SCController.getLatestAddress(abiAccount);
var contractInstance = SCController.getContractInstance(jsonFile.abi, addressWhereWasDeployed);
contractInstance.smartContractFunc(exampleParameter);
SCController.blkListenAllEventsContinuously(contractInstance, eventHandler);
function eventHandler (error, eventRet) {
if (error != null) console.error('Error!', error)
else console.log(eventRet.event ": " JSON.stringify(eventRet.args))
}
SCController.printEventLog(instanceAccountIdContract.allEvents);
SCController.blkListenAllEventsWithFilter(contractInstance, eventHandler, 'countryCode', 351);
```