function jsonPost(url, data)
    {
        return new Promise((resolve, reject) => {
            var x = new XMLHttpRequest();   
            x.onerror = () => reject(new Error('jsonPost failed'))
            //x.setRequestHeader('Content-Type', 'application/json');
            x.open("POST", url, true);
            x.send(JSON.stringify(data))

            x.onreadystatechange = () => {
                if (x.readyState == XMLHttpRequest.DONE && x.status == 200){
                    resolve(JSON.parse(x.responseText))
                }
                else if (x.status != 200){
                    reject(new Error('status is not 200'))
                }
            }
        })

        
    }

   

    var send = document.getElementById('send');
    var nick = document.getElementById('nick');
    var mes = document.getElementById('message');

   
    

    send.onclick = function(){
        var obj = {
            func: "addMessage",
            nick: nick.value,
            message: mes.value,
        }
    jsonPost("http://students.a-level.com.ua:10012", obj);
}
  
    var mesInd = 0;
 var smiles = {
        ':)' : 'http://www.kolobok.us/smiles/light_skin/diablo.gif',
        ';)' : 'http://www.kolobok.us/smiles/light_skin/hunter.gif',
        ':(' : 'http://www.kolobok.us/smiles/light_skin/dash3.gif'
    }

   
var interval = setInterval(() => {
    var obj2 = {
        func: "getMessages",
        messageId: mesInd,
    }
     jsonPost("http://students.a-level.com.ua:10012", obj2)
 .then((res) => {
     console.log(res)
     var divG = document.getElementById('get');
        mesInd = res.nextMessageId;
        for(i=0;i<res.data.length; i++){
             // messages.push(key);
             var newMes = document.createElement('div');
             var nick = res.data[i].nick;
             var message = res.data[i].message;
             var img = res.data[i].img;
             // var img = `<img src="/^(https?:\/\/)?([\w\.]+)\.([a-z]{2,6}\.?)(\/[\w\.]*)*\/?$/'>`
                for (let smile in smiles) {
                    message = message.replace(smile, `<img src="${smiles[smile]}">`);

                 }

                     newMes.innerHTML = `${nick} : ${message} :${img}`;
                     divG.prepend(newMes);
                 }
 

 })
 },1000);


// asynk await