Extract the price and sign it up for variable using javascript and node?

Question

I am using node-binance-api the follwoing function bring me all details of my last order:

binance.trades(“BNBUSD”, (error, trades, symbol) => {
console.info(symbol+" last order:", trades);
}, {limit:1});

How can extract only a the price and sign it up for a variable?

I get the following details:

{
symbol: ‘BNBUSD’,
id: -------,
orderId:-----------,
orderListId: -1,
price: ‘-----------’,
qty: ‘---------’,
quoteQty: ‘------’,
commission: ‘0.00105000’,
commissionAsset: ‘BNB’,
time: ----------,
isBuyer: true,
isMaker: false,
isBestMatch: true
}
]

Answer 1

Looks like you're getting an array of trades, which means there'll be multiple prices.

If you need a collection of prices of all trades, you could assign those prices to a prices variable like so:

binance.trades("BNBUSD", (error, trades, symbol) => {
  let prices = trades.map(trade => trade.price);
  // ... do something with `prices` here...
}, {limit:1});

At that point, prices will be an array of numbers (something like [1, 2.5, 0.7, 3, ...] depending on what the prices are).