market orders aren't working about node-binance-api HOT 5 CLOSED

const binance = require('node-binance-api');
binance.options({
  'APIKEY':'key',
  'APISECRET':'secret'
});
//Placing a MARKET order
var symbol = "BNBBTC", quantity = 1;
binance.buy(symbol, quantity, 0, {type:"MARKET"});

var quantity = 1;
binance.marketBuy("BNBBTC", quantity, function(response) {
	console.log("Market Buy response", response);
	// Now you can limit sell with a stop loss, etc.
});

var quantity = 5, price = 0.00402030;
binance.buy("BNBETH", quantity, price, {}, function(response) {
	console.log("Limit Buy response", response);
	console.log("order id: " + response.orderId);
});

var quantity = 1;
binance.marketBuy("BNBBTC", quantity, function(response) {
	console.log("Market Buy response", response);
	console.log("order id: " + response.orderId)
	// Now you can limit sell with a stop loss, etc.
});