web3.js 查询最新区块

要查询最新区块，可以使用web3.eth.getBlock('latest')函数。

代码如下：

app.js

const Web3 = require('web3')
const web3 = new Web3('https://mainnet.infura.io/v3/YOUR_INFURA_API_KEY') // YOUR_INFURA_API_KEY替换为你自己的key

// 查询最新区块
web3.eth.getBlock('latest').then(console.log)

运行app.js：

$ node app

输出

{ difficulty: '2456340185966952',
  extraData: '0x5050594520737061726b706f6f6c2d6574682d636e2d687a347033',
  gasLimit: 9924577,
  gasUsed: 9922914,
  hash:
   '0x25d9f9dd736ebaac3c99cb0edb5df22745c354d208c6e2b5b43f426f754adfbe',
  logsBloom:
   '0x0ce1945692a7b01c22c20e81306988264040c59cd0e0169c6b680452540943200c1a7123950308c8803ac839190d53404a20145a0c0491c321e2c25a002412b11c2469640eb0055b0dcd5b690a20712c22042a5e805d89488248510e9a40408839306386aecf00105a2d618240d608c48839121510a60544d10ce134a1c1043844584844b6cdc00bf4045cab9c90a4b61401c34d114c40000b80548c8d1a2c4f9b0848473043636020cc70b56984d7aa884e821216572a4474266aa6180b1e1f744e8c3e411534008064c011167616483904b140c00ab4a75821068b10e0e422adb675517d800304fe4018b80712a984b6208806331622442e919f4c0f5410f1',
  miner: '0x5A0b54D5dc17e0AadC383d2db43B0a0D3E029c4c',
  mixHash:
   '0xe1cf50b6eacd6bbf7ce75f52b4607a4d2d1cdf5bc40e510bb533ed70a68982ce',
  nonce: '0x12b94e2804b40bf0',
  number: 8718227,
  parentHash:
   '0xfa49033887723e949bc0e574c201efbb06a36b2da845b531c622b54aa29e9c9a',
  receiptsRoot:
   '0x0e89e46ec24648e6162142ccfbd32757285b84fdfa8bdcd9d6bed095a6d5113a',
  sha3Uncles:
   '0x1dcc4de8dec75d7aab85b567b6ccd41ad312451b948a7413f0a142fd40d49347',
  size: 39431,
  stateRoot:
   '0x358b86a6c724f4452d5685fdd8952650e90668bc195db1cbad8250f5cb98baec',
  timestamp: 1570767424,
  totalDifficulty: '12321314566668728607349',
  transactions:
   [ '0x39efacad04a436b8f4b85eb0662a75515b49b2e4f0ef561174af61a85e7f43a7',
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     '0x7deb65748688654535207f58b7314fc12e953f40bfa37b5d037c1b78d3c6a94d',
     '0x8692fc311620a3724193a056dde964a5b9906eadf7b2481650559b073ed9ff82',
     '0x2e3b0a64b85560f8e9e7e40fee2eed7d274bc073a8453477700f4d72cf71f5ec',
     '0xd49bf6437d4a8cf95c2ff962fb25297db7c063d4eff7f47d33788bc3f50cc5a3',
     '0x67d3ab58866e6bf9ccbc453476dd0e3870f3efa4ccde28016c1e18f1145dfdf6',
     '0xb633acf36d94207ddc1a66e46202789de2fc8dc17bac441d082018f19fc32aeb',
     '0xd23e5010c20c3080aaa524c6aa5a5cd826fe97f00c926918cdaafb649319ac6c',
     '0xcb7397f32c089391a2ff623ae1f32b19df87c5bb5a7951e21eebaaec33e72da0',
     '0x927f05a8281a6125343d3ce451d36f670a95620c069ea3f2ecde0e3acd4e9f7e',
     '0x916a0a63977206d0cffc7b5c0ce068ca82ef5644398db05f3f388a0829b441e7',
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     ... 97 more items ],
  transactionsRoot:
   '0xefca4dbf85159b8f6cf265ac19cb8c9dffe8eae7fc78b7bb5cbc0dcceb0ac522',
  uncles: [] }