HelloBlock-js

Javascript Client Wrappers for the HelloBlock API.

Installation:

This module is published in NPM:

$ npm install helloblock-js --save

API documentation

Instantiating a Client

var helloblock = require("../lib/helloblock")({
  network: 'testnet',
  debug: true
})

This generates a new API client. It accepts an options argument which is used to configure the client.

options:

• network string Setting the target network (mainnet, testnet)
• version string Pointing to particular API version (v1)
• debug string Output debugging information to the console

This options argument can will be an object with the properties specified above.

helloblock client

The API calls are generally constructed as resource and action:

The second last argument is an optional [options] argument and the last argument is the callback.

• err error object if there is something wrong in the API call or if status code is above 400
• response response object contains the full body of the response, including all the required meta-data

{
  "status": "success",
  "data": {
    "transactions": [
       {
        // transaction
       },
       {
        // transaction
       }
       // ...more transactions...
    ]
  }
}

• resource resource object contains only the actual data of the response

[
   {
    // transaction
   },
   {
    // transaction
   }
   // ...more transactions...
]

helloblock.resource.action('data', [options], function (err, response, resource) {
  if (err) {
    throw err;
  }

});

The following API resources are exposes in the module:

• transactions
  • transactions.get(txHash, callback)
  • transactions.batchGet(txHashes, callback)
  • transactions.latest([options], callback)
  • transactions.propagate(rawTxHex, callback)
• addresses
  • addresses.get(address, callback)
  • addresses.batchGet(addresses, callback)
  • addresses.getTransactions(addresses, [options], callback)
  • addresses.getUnspents(addresses, [options], callback)
• blocks
  • blocks.get(blockId, callback)
  • blocks.latest([options], callback)
• faucet
  • faucet.get(type, callback)
  • faucet.withdraw(toAddress, value, callback)
• wallet
  • wallet.get(addresses, [options], callback)

helloblock.transactions

helloblock.transactions.get

Get a transaction by its txHash

Arguments

• txHash string
• callback function

helloblock.transactions.get('2542cd64e02d902975dc6e2e97797ceec5a84e8597c80d22a9e2dbd16e748738', function (err, resp, resource) {
  /*
    use the resource
  */
});

helloblock.transactions.batchGet

Get transactions by an array of txHashes

Arguments

• txHashes Array[String]
• callback function

var txHashes = ['2542cd64e02d902975dc6e2e97797ceec5a84e8597c80d22a9e2dbd16e748738', '6f9e9570881e781db8c137c84c111a138e4a022e6b2def5e2a1589a802fe25f3']
helloblock.transactions.getBatch(txHashes, function (err, resp, resource) {
  /*
    use the resource
  */
});

helloblock.transactions.latest

Get latest transactions sorted by timestamp

Arguments

• options object (limit {integer}, offset {integer})
• callback function

helloblock.transactions.latest({limit: 10, offset: 10}, function (err, resp, resource) {
  /*
    use the resource
  */
});

helloblock.transactions.propagate

Propagate a raw transaction to the Bitcoin network

Arguments

• rawTxHex string
• callback function

var rawTxHex = '0100000001ec71e2ceac84....'
helloblock.transactions.latest(rawTxHex, function (err, resp, resource) {
  /*
    use the resource
  */
});

Tests

All tests should be run with npm:

$ npm test