web3.eth.getBlock - 返回指定块
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2023-12-01
web3.eth.getBlock()
方法返回指定块编号或块哈希对应的块。
调用:
web3.eth.getBlock(blockHashOrBlockNumber [, returnTransactionObjects] [, callback])
参数:
blockHashOrBlockNumber
:String|Number - 块编号或块哈希值,或者使用以下字符串:"genesis"、"latest" 或 "pending" 。returnTransactionObjects
:Boolean - 可选,默认值为false。当设置为true时,返回块中将包括所有交易详情,否则仅返回交易哈希。callback
:Function - 可选的回调函数,其第一个参数为错误对象,第二个参数为结果。
返回值:
一个Promise对象,其解析值为满足搜索条件的块对象,具有以下字段:
- number - Number: 块编号,处于pending状态的块为null
- hash 32 Bytes - String: 块哈希,处于pending状态的块为null
- parentHash 32 Bytes - String: 父块哈希
- nonce 8 Bytes - String: 生成的proof-of-work的哈希,处于pending状态的块为null
- sha3Uncles 32 Bytes - String: 块中叔伯数据的SHA3值
- logsBloom 256 Bytes - String: 块中日志的bloom filter,处于pending状态的块为null
- transactionsRoot 32 Bytes - String: 块中的交易树根节点
- stateRoot 32 Bytes - String: 块中的最终状态树根节点
- miner - String: 接收奖励的矿工地址
- difficulty - String: 该块的难度值
- totalDifficulty - String: 截至该块的全链总难度值
- extraData - String: 块 “extra data” 字段
- size - Number: 字节为单位的块大小
- gasLimit - Number: 该块允许的最大gas值
- gasUsed - Number: 该块中所有交易使用的gas总量
- timestamp - Number: 出块的unix时间戳
- transactions - Array: 交易对象数组,或者32字节长的交易哈希值,取决于returnTransactionObjects的设置
- uncles - Array: 叔伯块哈希值数组
示例代码:
web3.eth.getBlock(3150)
.then(console.log);
> {
"number": 3,
"hash": "0xef95f2f1ed3ca60b048b4bf67cde2195961e0bba6f70bcbea9a2c4e133e34b46",
"parentHash": "0x2302e1c0b972d00932deb5dab9eb2982f570597d9d42504c05d9c2147eaf9c88",
"nonce": "0xfb6e1a62d119228b",
"sha3Uncles": "0x1dcc4de8dec75d7aab85b567b6ccd41ad312451b948a7413f0a142fd40d49347",
"logsBloom": "0x00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000",
"transactionsRoot": "0x3a1b03875115b79539e5bd33fb00d8f7b7cd61929d5a3c574f507b8acf415bee",
"stateRoot": "0xf1133199d44695dfa8fd1bcfe424d82854b5cebef75bddd7e40ea94cda515bcb",
"miner": "0x8888f1f195afa192cfee860698584c030f4c9db1",
"difficulty": '21345678965432',
"totalDifficulty": '324567845321',
"size": 616,
"extraData": "0x",
"gasLimit": 3141592,
"gasUsed": 21662,
"timestamp": 1429287689,
"transactions": [
"0x9fc76417374aa880d4449a1f7f31ec597f00b1f6f3dd2d66f4c9c6c445836d8b"
],
"uncles": []
}