added more examples

examples/js/live-ticker.js

@@ -14,7 +14,7 @@ let printUsage = function () {
     printSupportedExchanges ()
 }
 
-let printTicker = async (id, symbol, depth) => {
+let printTicker = async (id, symbol) => {
 
     // check if the exchange is supported by ccxt
     let exchangeFound = ccxt.exchanges.indexOf (id) > -1

examples/js/live-tickers.js

@@ -0,0 +1,69 @@
+"use strict";
+
+const asTable   = require ('as-table')
+    , log       = require ('ololog').noLocate
+    , ansi      = require ('ansicolor').nice
+    , ccxt      = require ('../../ccxt.js')
+
+let printSupportedExchanges = function () {
+    log ('Supported exchanges:', ccxt.exchanges.join (', ').green)
+}
+
+let printUsage = function () {
+    log ('Usage: node', process.argv[1], 'exchange'.green)
+    printSupportedExchanges ()
+}
+
+let printTickers = async (id) => {
+
+    // check if the exchange is supported by ccxt
+    let exchangeFound = ccxt.exchanges.indexOf (id) > -1
+    if (exchangeFound) {
+
+        log ('Instantiating', id.green, 'exchange')
+
+        // instantiate the exchange by id
+        let exchange = new ccxt[id] ({ enableRateLimit: true })
+
+        // load all markets from the exchange
+        let markets = await exchange.loadMarkets ()
+
+        while (true) {
+
+            const tickers = await exchange.fetchTickers ()
+
+            log ('--------------------------------------------------------')
+            log (exchange.id.green, exchange.iso8601 (exchange.milliseconds ()))
+            log ('Fetched', Object.values (tickers).length.toString ().green, 'tickers:')
+            log (asTable.configure ({ delimiter: ' | '.dim, right: true }) (
+                ccxt.sortBy (Object.values (tickers), 'quoteVolume', true)
+                                   .slice (0,20)
+                                   .map (ticker => ({
+                                        symbol: ticker['symbol'],
+                                        price: ticker['last'].toFixed (8),
+                                        datetime: ticker['datetime'],
+                                   }))))
+        }
+
+    } else {
+
+        log ('Exchange ' + id.red + ' not found')
+        printSupportedExchanges ()
+    }
+}
+
+(async function main () {
+
+    if (process.argv.length > 2) {
+
+        const id = process.argv[2]
+        await printTickers (id)
+
+    } else {
+
+        printUsage ()
+    }
+
+    process.exit ()
+
+}) ()