commit

docs/ccxt/examples/js/binance-fetch-ohlcv-many-symbols-promise-then-callbacks.js

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+'use strict';
+
+const ccxt = require ('../../js/ccxt.js')
+
+console.log('CCXT Version:', ccxt.version)
+
+function symbolLoop (exchange, symbol, timeframe) {
+    exchange.fetchOHLCV (symbol, timeframe).then (ohlcvs => {
+        console.log (exchange.iso8601 (exchange.milliseconds ()), exchange.id, symbol, ohlcvs.length, 'OHLCV candles received')
+        setTimeout (() => symbolLoop (exchange, symbol, timeframe), 0)
+    }).catch (e => {
+        console.log (exchange.iso8601 (exchange.milliseconds ()), exchange.id, symbol, e.constructor.name, e.message)
+        setTimeout (() => symbolLoop (exchange, symbol, timeframe), 0)
+    })
+}
+
+function main () {
+    const exchange = new ccxt.binance ()
+    // exchange.verbose = true // uncomment for debugging purposes if necessary
+    const symbols = [
+        'BTC/USDT', // unified symbols used here as opposed to exchange-specific market ids
+        'ETH/USDT', // more about unified symbols vs exchange-specific ids here:
+        'ADA/USDT', // https://github.com/ccxt/ccxt/wiki/Manual#markets
+    ]
+    const timeframe = '1m'
+    exchange.loadMarkets ().then (markets => {
+        for (const symbol of symbols) {
+            setTimeout (() => symbolLoop (exchange, symbol, timeframe), 0)
+        }
+    })
+}
+
+main ()