[Chatango] Message counter in message

//Paste this in the chrome console to have a msg counter in your groupchat message.
//By @Hardware

var box = document.getElementsByClassName("input-field editable")[0];
var count = 0;
if(box){
box.addEventListener("keydown", function (e) {
    if (e.keyCode === 13) {
        count ++
        CustomMessage =  "<Msg count: "+count.toString()+">: "+document.getElementsByClassName("input-field editable")[0].innerText
        document.getElementsByClassName("input-field editable")[0].innerText = CustomMessage;
    }
});
}