npm init

npm install --save bitcoinjs-lib jquery

var bitcoin = require('bitcoinjs-lib');
var $ = require('jquery'); // yes, we are in 2017, it had been solved

var tx = new bitcoin.TransactionBuilder();

// Add the input (who is paying):
// [previous transaction hash, index of the output to use]
var txId = 'aa94ab02c182214f090e99a0d57021caffd0f195a81c24602b1028b130b63e31' ;
tx.addInput(txId, 0);

// Add the output (who to pay to):
// [payee's address, amount in satoshis]
tx.addOutput("1Gokm82v6DmtwKEB8AiVhm82hyFSsEvBDK", 15000);

// Initialize a private key using WIF
var privateKeyWIF = 'L1uyy5qTuGrVXrmrsvHWHgVzW9kKdrp27wBC7Vs6nZDTF2BRUVwy';
var keyPair = bitcoin.ECPair.fromWIF(privateKeyWIF);

// Sign the first input with the new key
tx.sign(0, keyPair);

/*-------------------------------------------Look here ---------------------------------------------*/
// Print transaction serialized as hex
var hexTX = tx.build().toHex();

$.post('http://btc.blockr.io/api/v1/tx/push',{"hex":hexTX},function(data){
console.log(data);
});

var tx = new bitcoin.TransactionBuilder()

// Add the input (who is paying):
// [previous transaction hash, index of the output to use]
var txId = 'aa94ab02c182214f090e99a0d57021caffd0f195a81c24602b1028b130b63e31' //
tx.addInput(txId, 0)

// Add the output (who to pay to):
// [payee's address, amount in satoshis]
tx.addOutput("1Gokm82v6DmtwKEB8AiVhm82hyFSsEvBDK", 15000)

// Initialize a private key using WIF
var privateKeyWIF = 'L1uyy5qTuGrVXrmrsvHWHgVzW9kKdrp27wBC7Vs6nZDTF2BRUVwy'
var keyPair = bitcoin.ECPair.fromWIF(privateKeyWIF)

// Sign the first input with the new key
tx.sign(0, keyPair);

/*-------------------------------------------Look here ---------------------------------------------*/
// Print transaction serialized as hex
var hexTX = tx.build().toHex();

$.post('http://btc.blockr.io/api/v1/tx/push',{"hex":hexTX},function(data){
console.log(data);
});

// JS file

 var infos;
$.get('https://btc.blockr.io/api/v1/block/raw/last', function(data){
	console.log(data.data);
  infos = data.data;
  $("#container").append("<table></table>");
$("#container table").append("<tr id='tr0'></tr>");
$("#container table").append("<tr id='tr1'></tr>");
  for (var detail in infos){
    if(infos.hasOwnProperty(detail)){
      $("#container table #tr0").append("<th>"+ detail + "</th>");
      if(typeof(infos[detail]) !== "string"){
      	console.log('is');
      	$("#container table #tr1").append("<td>"+ infos.tx[0] +"</td>");
      }else{
      $("#container table #tr1").append("<td>"+ infos[detail] +"</td>");
      }
    };
  };
});

//HTML with the basic html tags and using jquery

<div id="container">

</div>

// Some css

#container{
 height: 100%;
 width: 100%;
}
tr{
  margin-left:5px;
}
table,tr,td,th{
  border: 1px solid black;
}