web3.js \u667a\u80fd\u5408\u7ea6\u4e8b\u4ef6<\/h1>\n<\/p><\/div>\n

\n \u4ee5\u592a\u574a\u667a\u80fd\u5408\u7ea6\u80fd\u591f\u53d1\u51fa\u4e8b\u4ef6\uff0c\u8868\u793a\u5728\u667a\u80fd\u5408\u7ea6\u4ee3\u7801\u6267\u884c\u4e2d\u53d1\u751f\u7684\u4e8b\u60c5\u3002\u667a\u80fd\u5408\u7ea6\u7684\u524d\u7aefUI\uff0c\u4f8b\u5982\uff0cDApps\u3001web3.js\uff0c\u90fd\u53ef\u4ee5\u4fa6\u542c\u8fd9\u4e9b\u4e8b\u4ef6\u3002\n <\/div>\n

\n \u4e8b\u4ef6\u5728\u533a\u5757\u94fe\u4e2d\u7684\u5b58\u50a8\n <\/div>\n

\n \u533a\u5757\u94fe\u662f\u4e00\u4e2a\u7531\u533a\u5757\u7ec4\u6210\u7684\u5217\u8868\uff0c\u8fd9\u4e9b\u5757\u7684\u5185\u5bb9\u57fa\u672c\u4e0a\u662f\u4ea4\u6613\u8bb0\u5f55\u3002\u6bcf\u4e2a\u4ea4\u6613\u90fd\u6709\u4e00\u4e2a\u9644\u52a0\u7684\u4ea4\u6613\u65e5\u5fd7\uff0c\u4e8b\u4ef6\u7ed3\u679c\u5b58\u653e\u5728\u4ea4\u6613\u65e5\u5fd7\u91cc\u3002\u5408\u7ea6\u53d1\u51fa\u7684\u4e8b\u4ef6\uff0c\u53ef\u4ee5\u4f7f\u7528\u5408\u7ea6\u5730\u5740\u8bbf\u95ee\u3002\n <\/div>\n

\n web3.js\u4e2d\uff0c\u53ef\u4ee5\u901a\u8fc7\u667a\u80fd\u5408\u7ea6\u5bf9\u8c61\u4e2d\u7684
\n getPastEvents<\/b>\u51fd\u6570\u8bbf\u95ee\u4e8b\u4ef6\u3002\n <\/div>\n
\n \u672c\u7ae0\u793a\u4f8b\uff0c\u6211\u4eec\u5c06\u5b9e\u9645\u8fde\u63a5\u5230Ethereum\u4e3b\u7f51\u6765\u83b7\u53d6OmiseGo ERC-20\u901a\u8bc1\u7684\u4f20\u8f93\u4e8b\u4ef6\u3002ERC-20\u6807\u51c6\u89c4\u5b9a\uff0c\u5b9e\u73b0\u8be5\u6807\u51c6\u7684\u667a\u80fd\u5408\u7ea6\u5fc5\u987b\u5728\u4f20\u8f93\u901a\u8bc1\u65f6\u53d1\u51fa\u4f20\u8f93\u4e8b\u4ef6\u3002\n <\/div>\n
\n \u4f7f\u7528web3.js\u83b7\u53d6OmiseGo\u667a\u80fd\u5408\u7ea6\u4e8b\u4ef6\u7684\u6b65\u9aa4\u5982\u4e0b\uff1a\n <\/div>\n
\u521b\u5efa\u667a\u80fd\u5408\u7ea6\u5bf9\u8c61\u3002<\/span>
\n \u4f7f\u7528getPastEvents<\/b>\u51fd\u6570\u83b7\u53d6\u4e8b\u4ef6<\/span> <\/p>\n
\n \u6ce8\u610f\uff0c\u6b64\u6b21\u8fde\u63a5\u5230\u4ee5\u592a\u574a\u4e3b\u7f51(mainnet)\n <\/div>\n
\u521b\u5efa\u667a\u80fd\u5408\u7ea6\u5bf9\u8c61<\/h2>\n
\n \u521b\u5efa\u667a\u80fd\u5408\u7ea6\u5bf9\u8c61\uff0c\u8981\u8bbe\u7f6e\u667a\u80fd\u5408\u7ea6\u7684ABI\u4ee3\u7801\u53ca\u5730\u5740\uff0c\u8fd9\u4e9b\u4fe1\u606f\u90fd\u53ef\u4ee5\u5728etherscan\u67e5\u8be2\u5230\u3002\n <\/div>\n
\n
const Web3 = require('web3'<\/span>)\r\nconst web3 = new <\/span>Web3('https:\/\/mainnet.infura.io\/YOUR_INFURA_API_KEY'<\/span>) \/\/ \u8fde\u63a5\u5230\u4e3b\u7f51\r\n\/\/ OMG Token Contract ABI code\r\nconst abi = [{\"constant\"<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>:true,\"inputs\"<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>:[],\"name\"<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>:\"mintingFinished\"<\/span>,\"outputs\"<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>:[{\"name\":\"\"<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>,\"type\"<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>:\"bool\"<\/span><\/span><\/span><\/span><\/span><\/span>}],\"payable\"<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>:false,\"type\":\"function\"<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>},{\"constant\":true,\"inputs\":[],\"name\":\"name\",\"outputs\":[{\"name\":\"\",\"type\":\"string\"<\/span><\/span>}],\"payable\":false,\"type\":\"function\"},{\"constant\":false,\"inputs\":[{\"name\":\"_spender\"<\/span><\/span>,\"type\":\"address\"<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>},{\"name\":\"_value\"<\/span><\/span><\/span>,\"type\":\"uint256\"<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>}],\"name\":\"approve\"<\/span>,\"outputs\":[],\"payable\":false,\"type\":\"function\"},{\"constant\":true,\"inputs\":[],\"name\":\"totalSupply\"<\/span>,\"outputs\":[{\"name\":\"\",\"type\":\"uint256\"}],\"payable\":false,\"type\":\"function\"},{\"constant\":false,\"inputs\":[{\"name\":\"_from\"<\/span>,\"type\":\"address\"},{\"name\":\"_to\"<\/span><\/span><\/span><\/span>,\"type\":\"address\"},{\"name\":\"_value\",\"type\":\"uint256\"}],\"name\":\"transferFrom\"<\/span>,\"outputs\":[],\"payable\":false,\"type\":\"function\"},{\"constant\":true,\"inputs\":[],\"name\":\"decimals\"<\/span>,\"outputs\":[{\"name\":\"\",\"type\":\"uint256\"}],\"payable\":false,\"type\":\"function\"},{\"constant\":false,\"inputs\":[],\"name\":\"unpause\"<\/span>,\"outputs\":[{\"name\":\"\",\"type\":\"bool\"}],\"payable\":false,\"type\":\"function\"},{\"constant\":false,\"inputs\":[{\"name\":\"_to\",\"type\":\"address\"},{\"name\":\"_amount\"<\/span><\/span>,\"type\":\"uint256\"}],\"name\":\"mint\"<\/span>,\"outputs\":[{\"name\":\"\",\"type\":\"bool\"}],\"payable\":false,\"type\":\"function\"},{\"constant\":true,\"inputs\":[],\"name\":\"paused\"<\/span>,\"outputs\":[{\"name\":\"\",\"type\":\"bool\"}],\"payable\":false,\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"_owner\"<\/span><\/span>,\"type\":\"address\"}],\"name\":\"balanceOf\"<\/span>,\"outputs\":[{\"name\":\"balance\"<\/span>,\"type\":\"uint256\"}],\"payable\":false,\"type\":\"function\"},{\"constant\":false,\"inputs\":[],\"name\":\"finishMinting\"<\/span>,\"outputs\":[{\"name\":\"\",\"type\":\"bool\"}],\"payable\":false,\"type\":\"function\"},{\"constant\":false,\"inputs\":[],\"name\":\"pause\"<\/span>,\"outputs\":[{\"name\":\"\",\"type\":\"bool\"}],\"payable\":false,\"type\":\"function\"},{\"constant\":true,\"inputs\":[],\"name\":\"owner\"<\/span><\/span>,\"outputs\":[{\"name\":\"\",\"type\":\"address\"}],\"payable\":false,\"type\":\"function\"},{\"constant\":true,\"inputs\":[],\"name\":\"symbol\"<\/span>,\"outputs\":[{\"name\":\"\",\"type\":\"string\"}],\"payable\":false,\"type\":\"function\"},{\"constant\":false,\"inputs\":[{\"name\":\"_to\",\"type\":\"address\"},{\"name\":\"_value\",\"type\":\"uint256\"}],\"name\":\"transfer\"<\/span>,\"outputs\":[],\"payable\":false,\"type\":\"function\"},{\"constant\":false,\"inputs\":[{\"name\":\"_to\",\"type\":\"address\"},{\"name\":\"_amount\",\"type\":\"uint256\"},{\"name\":\"_releaseTime\"<\/span>,\"type\":\"uint256\"}],\"name\":\"mintTimelocked\"<\/span>,\"outputs\":[{\"name\":\"\",\"type\":\"address\"}],\"payable\":false,\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"_owner\",\"type\":\"address\"},{\"name\":\"_spender\",\"type\":\"address\"}],\"name\":\"allowance\"<\/span>,\"outputs\":[{\"name\":\"remaining\"<\/span>,\"type\":\"uint256\"}],\"payable\":false,\"type\":\"function\"},{\"constant\":false,\"inputs\":[{\"name\":\"newOwner\"<\/span>,\"type\":\"address\"}],\"name\":\"transferOwnership\"<\/span>,\"outputs\":[],\"payable\":false,\"type\":\"function\"},{\"anonymous\"<\/span><\/span><\/span><\/span><\/span><\/span>:false,\"inputs\":[{\"indexed\"<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>:true,\"name\":\"to\"<\/span><\/span>,\"type\":\"address\"},{\"indexed\":false,\"name\":\"value\"<\/span><\/span><\/span>,\"type\":\"uint256\"}],\"name\":\"Mint\"<\/span>,\"type\":\"event\"<\/span><\/span><\/span><\/span><\/span><\/span>},{\"anonymous\":false,\"inputs\":[],\"name\":\"MintFinished\"<\/span>,\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[],\"name\":\"Pause\"<\/span>,\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[],\"name\":\"Unpause\"<\/span>,\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"name\":\"owner\",\"type\":\"address\"},{\"indexed\":true,\"name\":\"spender\"<\/span>,\"type\":\"address\"},{\"indexed\":false,\"name\":\"value\",\"type\":\"uint256\"}],\"name\":\"Approval\"<\/span>,\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"name\":\"from\"<\/span>,\"type\":\"address\"},{\"indexed\":true,\"name\":\"to\",\"type\":\"address\"},{\"indexed\":false,\"name\":\"value\",\"type\":\"uint256\"}],\"name\":\"Transfer\"<\/span>,\"type\":\"event\"}]\r\n\/\/ \u667a\u80fd\u5408\u7ea6\u5730\u5740\r\nconst address = '0xd26114cd6EE289AccF82350c8d8487fedB8A0C07'<\/span>\r\n\/\/ \u521b\u5efa\u667a\u80fd\u5408\u7ea6\u5bf9\u8c61\r\nconst contract = new <\/span>web3.eth.Contract<\/span>(abi, address)<\/pre>\n<\/code>\n <\/div>\n \u4f7f\u7528getPastEvent`\u51fd\u6570\u83b7\u53d6\u4e8b\u4ef6<\/h2>\n\n \u67e5\u770b\u667a\u80fd\u5408\u7ea6\u7684\u4e8b\u4ef6\uff0c\u53ef\u4ee5\u4f7f\u7528contract\u5bf9\u8c61\u4e0a\u7684 \n getPastEvents()<\/b>\u51fd\u6570\u3002\n <\/div>\n\ncontract.getPastEvents<\/span>(\r\n 'AllEvents'<\/span>, \/\/ \u8fc7\u6ee4\u4e8b\u4ef6\u53c2\u6570\uff0c\u8fd9\u91cc\u83b7\u53d6\u5168\u90e8\u4e8b\u4ef6\r\n {\r\n fromBlock: 0, \/\/ \u8d77\u59cb\u5757\r\n toBlock: 'latest'<\/span> \/\/ \u7ec8\u6b62\u5757\r\n },\r\n (err, events) => { console.log<\/span>(events) } \/\/ \u56de\u8c03\u51fd\u6570\r\n)<\/pre>\n<\/code>\n <\/div>\n \n fromBlock<\/b>\u4e0e \n toBlock<\/b>\u6307\u5b9a\u4e86\u67e5\u8be2\u4e8b\u4ef6\u7684\u8d77\u59cb\u533a\u5757\u4e0e\u7ec8\u6b62\u533a\u5757\uff0c\u5982\u679c\u533a\u5757\u4e2d\u7684\u4e8b\u4ef6\u592a\u591a\uff0c \n getPastEvents<\/b>\u51fd\u6570\u8c03\u7528\u4f1a\u5931\u8d25\u3002\n <\/div>\n\n \u53ef\u4ee5\u9650\u5236\u4e00\u4e0b\u8981\u67e5\u8be2\u533a\u5757\u7684\u8303\u56f4\uff0c\u4ee5\u514d\u51fd\u6570\u6267\u884c\u5931\u8d25\u3002\u6211\u4eec\u7684\u793a\u4f8b\u4e2d\u4f1a\u67e5\u8be2\u6700\u65b0\u51e0\u4e2a\u533a\u5757\u4e2d\u7684\u4e8b\u4ef6\uff0c\u5173\u4e8e\u6700\u65b0\u533a\u5757\u7684\u5e8f\u53f7\uff0c\u53ef\u4ee5\u901a\u8fc7etherscan\u67e5\u8be2\u3002\n <\/div>\n\ncontract.getPastEvents<\/span>(\r\n 'AllEvents'<\/span>,\r\n {\r\n fromBlock: 8717848,\r\n toBlock: 'latest'<\/span>\r\n },\r\n (err, events) => { console.log<\/span>(events) }\r\n)<\/pre>\n<\/code>\n <\/div>\n <\/body> \n<\/html><\/p>\n","protected":false},"excerpt":{"rendered":"web3.js \u667a\u80fd\u5408\u7ea6\u4e8b\u4ef6zh-cn","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[155],"tags":[],"class_list":["post-1810","post","type-post","status-publish","format-standard","hentry","category-web3js"],"_links":{"self":[{"href":"https:\/\/bianchenghao6.com\/wp-json\/wp\/v2\/posts\/1810"}],"collection":[{"href":"https:\/\/bianchenghao6.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/bianchenghao6.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/bianchenghao6.com\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/bianchenghao6.com\/wp-json\/wp\/v2\/comments?post=1810"}],"version-history":[{"count":0,"href":"https:\/\/bianchenghao6.com\/wp-json\/wp\/v2\/posts\/1810\/revisions"}],"wp:attachment":[{"href":"https:\/\/bianchenghao6.com\/wp-json\/wp\/v2\/media?parent=1810"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/bianchenghao6.com\/wp-json\/wp\/v2\/categories?post=1810"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/bianchenghao6.com\/wp-json\/wp\/v2\/tags?post=1810"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}