Dec 16, 2018

diff --git a/Javascript-Query-Example.md b/Javascript-Query-Example.md
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+### Fetch transaction:
+```js
+const zmq = require('zeromq');
+const pystruct = require('python-struct');
+const requester = zmq.socket('req');
+
+const endpoint = 'tcp://mainnet.libbitcoin.net:9091';
+
+requester.on('message', function(command, identifier, buffer) {
+  console.log(buffer.toString('hex').substr(8));
+  requester.close();
+});
+
+requester.setsockopt(zmq.ZMQ_RCVTIMEO, 5000);
+requester.setsockopt(zmq.ZMQ_SNDTIMEO, 5000);
+requester.connect(endpoint);
+
+const txhash = '60e030aba2f593caf913a7d96880ff227143bfc370d03dbaee37d582801ebd83';
+requester.send('blockchain.fetch_transaction2', zmq.ZMQ_SNDMORE);
+requester.send(pystruct.pack('I', 42), zmq.ZMQ_SNDMORE);
+requester.send(Buffer.from(txhash.match(/.{1,2}/g).reverse().join(''), 'hex'));
+
+```
+Output:
+```
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
+```
+
+### Fetch block header
+```js
+const zmq = require('zeromq');
+const pystruct = require('python-struct');
+const requester = zmq.socket('req');
+