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Exchange through eosjs recharge and transfer code snippet is how, many novices are not very clear about this, in order to help you solve this problem, the following editor will explain in detail for you, people with this need can come to learn, I hope you can gain something.

Two remote test nodes are connected

Const rpcUrl = 'http://jungle2.cryptolions.io:80'

Const actionUrl = 'http://junglehistory.cryptolions.io:18888' / / only this test node can provide actions records

/ / process the account transaction records, determine the new account records after the last scan, and recharge the user according to the remarks

Async function dealActions (accountName) {

Let rpcH = new JsonRpc (actionUrl, {fetch})

Let actionHistory = await rpcH.history_get_actions (accountName)

Let latestTime = 'select TRANS_TIME from RECHARGE where IFLAST=yes' / / pseudo code

For (let i in actionHistory.actions) {

Var block_time = actionHistory.actions [I] .block _ time

If (block_time > latestTime) {

Let memo = actionHistory.actions [I] .action _ trace.act.data.memo

Let quantity = actionHistory.actions [I] .action _ trace.act.data.quantity

Let from = actionHistory.actions [I] .action _ trace.act.data.from

Let to = actionHistory.actions [I] .action _ trace.act.data.to

Let trx_id = actionHistory.actions [I] .action _ trace.trx_id

Let global_action_seq = actionHistory.actions [I] .global _ action_seq

Let block_num = actionHistory.actions [I] .block _ num

Let producer_block_id = actionHistory.actions [I] .activities _ block_id

/ / let to = actionHistory.actions [I] .action _ trace.act.data.to

Console.log ('memos'+i+'='+memo)

/ / insert into RECHARGE values () / / insert the recharge table

/ / update USER_ACCOUNT set BALANCE AVAILABLE_BALANCE where USER_ID = 0 / / Update the account

}

}

Return actionHistory

}

/ / transfer operation transfer to account accountName 'eosaccountb2'; transfer amount quantity' 1.1234 EOS'

Async function transfer (accountName,quantity) {

Let signatureProvider = new JsSignatureProvider ([pkeys [0] .privateKey])

Let api = new Api ({rpc, signatureProvider, textDecoder: new TextDecoder (), textEncoder: new TextEncoder ()})

Let result = await api.transact ({

Actions: [{

Account: 'eosio.token'

Name: 'transfer'

Authorization: [{

Actor: pkeys [0] .actor

Permission: 'active'

}]

Data: {

From: pkeys [0] .actor

To: accountName, / / withdrawal address

Quantity: quantity, / / number of withdrawals

Memo:''

}

}]

}, {

BlocksBehind: 3

ExpireSeconds: 30

});

Console.dir (result)

Let transaction_id = result.transaction_id

Let receipt= result.processed.receipt / / net and cpu of the mortgage, recorded in the database backup

Console.log ('receipt===='+JSON.stringify (receipt))

/ / insert into WITHDRAW ()

}

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