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| require 'sinatra' # gem install sinatra --no-rdoc --no-ri | |
| set :port, 3000 | |
| set :environment, :production | |
| html = <<-EOT | |
| <html><head><style> | |
| #text{width:100%; font-size: 15px; padding: 5px; display: block;} | |
| </style></head><body> | |
| <input id="text" placeholder="Write then press Enter."/> | |
| <div id="chat"></div> | |
| <script src="http://code.jquery.com/jquery-1.11.0.min.js"></script> | |
| <script> | |
| $('#text').keypress(function(e){ | |
| if( e.keyCode==13 ){ | |
| $.get('/send',{text:$('#text').val()}); | |
| $('#text').val(''); | |
| } | |
| }); | |
| last = 0; | |
| setInterval(function(){ | |
| $.get('/update',{last:last}, | |
| function(response){ | |
| last = $('<p>').html(response).find('span').data('last'); | |
| $('#chat').append(response); | |
| }); | |
| },1000); | |
| </script> | |
| </body></html> | |
| EOT | |
| chat = ['welcome..'] | |
| get('/') { html } | |
| get '/send' do | |
| chat << "#{request.ip} : #{params['text']}" | |
| nil | |
| end | |
| get '/update' do | |
| updates = chat[params['last'].to_i..-1] | |
| last = "<span data-last=\"#{chat.size}\"></span>" | |
| if updates.size>0 | |
| updates.join('</br>') + "#{last}</br>" | |
| else | |
| last | |
| end | |
| end |
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