text: var lastTimeID = 0;
  
  function () {
    $( "#btnSend" ).click(function() => {
        sendChatText();
        $this.(#chatInput).val("");
      });
    startChat();
  });
  
  function startChat(){
    setInterval( function() { getChatText(); }, 2000);
  }
  
  function getChatText() {
    $.ajax({
      type: "GET",
      url: "/refresh.php?lastTimeID=" + lastTimeID
    }).done( function( data )
    {
      var jsonData = JSON.parse(data);
      var jsonLength = jsonData.results.length;
      var html = "";
      for (var i = 0; i < jsonLength; i++) {
        var result = jsonData.results[i];
        html += '<div style="color:#' + result.color + '">(' + result.chattime + ') <b>' + result.usrname +'</b>: ' + result.chattext + '</div>';
        lastTimeID = result.id;
      }
      $('#view_ajax').append(html);
    });
  }
  
  function sendChatText(){
    var chatInput = $('#chatInput').val();
    if(chatInput != ""){
      $.ajax({
        type: "GET",
        url: "/submit.php?chattext=" + encodeURIComponent( chatInput )
      });
    }
  }
  