读取区块链读取区块链状态只需要连接到节点的JsonRpc实例。const { JsonRpc } = require(’eosjs’);const fetch = require(’node-fetch’); // node only; not needed in browsersconst rpc = new JsonRpc(‘http://127.0.0.1:8888’, { fetch });示例获取表格行获取帐户testacc的前10个代币余额。const resp = await rpc.get_table_rows({ json: true, // Get the response as json code: ’eosio.token’, // Contract that we target scope: ’testacc’ // Account that owns the data table: ‘accounts’ // Table name limit: 10, // maximum number of rows that we want to get});console.log(resp.rows);输出：{ “rows”: [{ “balance”: “100.0000 HAK” } ], “more”: false}按索引获取一行const resp = await rpc.get_table_rows({ json: true, // Get the response as json code: ‘contract’, // Contract that we target scope: ‘contract’ // Account that owns the data table: ‘profiles’ // Table name lower_bound: ’testacc’ // Table primary key value limit: 1, // Here we limit to 1 to get only the});console.log(resp.rows);输出：{ “rows”: [{ “user”: “testacc”, “age”: 21, “surname”: “Martin” } ], “more”: false}通过二级索引获取一行const resp = await rpc.get_table_rows({ json: true, // Get the response as json code: ‘contract’, // Contract that we target scope: ‘contract’ // Account that owns the data table: ‘profiles’ // Table name table_key: ‘age’ // Table secondaray key name lower_bound: 21 // Table secondary key value limit: 1, // Here we limit to 1 to get only the});console.log(resp.rows);输出：{ “rows”: [{ “user”: “testacc”, “age”: 21, “surname”: “Martin” } ], “more”: false}获得货币余额console.log(await rpc.get_currency_balance(’eosio.token’, ’testacc’, ‘HAK’));输出：[ “1000000000.0000 HAK” ]获取帐户信息console.log(await rpc.get_account(’testacc’));输出：{ “account_name”: “testacc”, “head_block_num”: 1079, “head_block_time”: “2018-11-10T00:45:53.500”, “privileged”: false, “last_code_update”: “1970-01-01T00:00:00.000”, “created”: “2018-11-10T00:37:05.000”, “ram_quota”: -1, “net_weight”: -1, “cpu_weight”: -1, “net_limit”: { “used”: -1, “available”: -1, “max”: -1 }, “cpu_limit”: { “used”: -1, “available”: -1, “max”: -1 }, “ram_usage”: 2724, “permissions”: [ { “perm_name”: “active”, “parent”: “owner”, “required_auth”: [] }, { “perm_name”: “owner”, “parent”: “”, “required_auth”: [] } ], “total_resources”: null, “self_delegated_bandwidth”: null, “refund_request”: null, “voter_info”: null }获取区块console.log(await rpc.get_block(1));输出：{ “timestamp”: “2018-06-01T12:00:00.000”, “producer”: “”, “confirmed”: 1, “previous”: “0000000000000000000000000000000000000000000000000000000000000000”, “transaction_mroot”: “0000000000000000000000000000000000000000000000000000000000000000”, “action_mroot”: “cf057bbfb72640471fd910bcb67639c22df9f92470936cddc1ade0e2f2e7dc4f”, “schedule_version”: 0, “new_producers”: null, “header_extensions”: [], “producer_signature”: “SIG_K1_111111111111111111111111111111111111111111111111111111111111111116uk5ne”, “transactions”: [], “block_extensions”: [], “id”: “00000001bcf2f448225d099685f14da76803028926af04d2607eafcf609c265c”, “block_num”: 1, “ref_block_prefix”: 2517196066 }上一篇：交易