user58914: I have to to use bitcoin api using nodejs. but I cannot understand from where I have to start.Search some node module like bitcoin-core and bitcoin.
Can anyone describe the step how can I set up bitcoin in our system and use using nodejs.
Also refer some link where use of bitcoin api request and response parameter are describe in nodejs. 
I have to use bitcoin json-rpc api's with node.js but dont know from where i can start?

user51673: First and foremost, install bitcoin-core. I recommend compiling it yourself but there are binaries available for download. You'll want to perform all the steps in this tutorial - follow all steps for the daemon. Do not do the graphical user interface steps. https://bitcoin.org/en/full-node#ubuntu-1610 
Run the daemon and use bitcoin-cli to familiarize yourself with the Bitcoin RPC API. https://bitcoin.org/en/full-node#other-linux-distributions
Start the daemon, such that it creates the right folders.
bitcoind -daemon
Stop it after a few seconds.
bitcoin-cli stop
You should see a new folder .bitcoind in your HOME directory. (Or AppData if you're on Windows). You'll need to add this file into it as 'bitcoin.conf':

rpcuser=YOURUSERNAME
rpcpassword=YOURPASSWORD

Replace YOURUSERNAME with a username of your choice, same for the password. Remember these as you'll need it for configuring your NodeJS app.
bitcoind -daemon
Get the balance:
bitcoin-cli -rpcuser=YOURUSERNAME -rpcpassword=YOURPASSWORD getbalance
Pick a nice Bitcoin Core JSON-RPC Node module, like this one:
https://www.npmjs.com/package/node-bitcoin-rpc
^Also has the get balance example.
They use the same commands that you enter in the bitcoin-cli.

user52281: I m using bitcore for stand alone rpc because it has many new indexes and new methods.
See this link https://bitcore.io/guides/bitcoin 

58914: <p>I have to to use bitcoin api using nodejs. but I cannot understand from where I have to start.Search some node module like bitcoin-core and bitcoin.</p>

<p>Can anyone describe the step how can I set up bitcoin in our system and use using nodejs.
Also refer some link where use of bitcoin api request and response parameter are describe in nodejs. </p>

<p>I have to use bitcoin json-rpc api's with node.js but dont know from where i can start?</p>
 51673: <p>First and foremost, install bitcoin-core. I recommend compiling it yourself but there are binaries available for download. You'll want to perform all the steps in this tutorial - follow all steps for the <em>daemon</em>. Do not do the <em>graphical user interface</em> steps. <a href="https://bitcoin.org/en/full-node#ubuntu-1610" rel="nofollow noreferrer">https://bitcoin.org/en/full-node#ubuntu-1610</a> </p>

<p>Run the daemon and use bitcoin-cli to familiarize yourself with the Bitcoin RPC API. <a href="https://bitcoin.org/en/full-node#other-linux-distributions" rel="nofollow noreferrer">https://bitcoin.org/en/full-node#other-linux-distributions</a></p>

<p>Start the daemon, such that it creates the right folders.
<code>bitcoind -daemon</code>
Stop it after a few seconds.
<code>bitcoin-cli stop</code></p>

<p>You should see a new folder <code>.bitcoind</code> in your HOME directory. (Or AppData if you're on Windows). You'll need to add this file into it as 'bitcoin.conf':</p>

<blockquote>
  <p>rpcuser=YOURUSERNAME</p>
  
  <p>rpcpassword=YOURPASSWORD</p>
</blockquote>

<p>Replace YOURUSERNAME with a username of your choice, same for the password. Remember these as you'll need it for configuring your NodeJS app.</p>

<p><code>bitcoind -daemon</code></p>

<p>Get the balance:
<code>bitcoin-cli -rpcuser=YOURUSERNAME -rpcpassword=YOURPASSWORD getbalance</code></p>

<p>Pick a nice Bitcoin Core JSON-RPC Node module, like this one:
<a href="https://www.npmjs.com/package/node-bitcoin-rpc" rel="nofollow noreferrer">https://www.npmjs.com/package/node-bitcoin-rpc</a>
^Also has the get balance example.</p>

<p>They use the same commands that you enter in the bitcoin-cli.</p>
 52281: <p>I m using bitcore for stand alone rpc because it has many new indexes and new methods.</p>

<p>See this link <a href="https://bitcore.io/guides/bitcoin" rel="nofollow noreferrer">https://bitcore.io/guides/bitcoin</a> </p>
