PubNub Chat in 10 lines

pubnub-chat-10-lines.html

<div pub-key="..." sub-key="..." ssl="off" ...></div>
<script src="http://cdn.pubnub.com/pubnub-3.1.min.js"></script>

Enter Chat and press enter
<div><input id="input" value="you-chat-here" /></div>

Chat Output
<div id="output"></div>

<script>
(function(){
  var box = PUBNUB.$('output');
  var input = PUBNUB.$('input');
  var channel = 'chat';
  
  PUBNUB.subscribe({
    channel  : channel,
    callback : function(text) { 
        box.innerHTML = (''+text).replace( /[<>]/g, '' ) 
          + '<br/>' + box.innerHTML; 
    }
  });
  
  PUBNUB.bind( 'keyup', input, 
    function(e) {
      (e.keyCode || e.charCode) === 13 && PUBNUB.publish({
          channel : channel, message : input.value
      });
    });
})();</script>