renderTemplateAndRegisterClickHandlers() { 
    this.innerHTML = defaultMarkup(this.id);
    this.chatText = this.querySelectorAll(".chatText")[0];
    this.inputBox = this.querySelectorAll(".textarea")[0];
    this.sendButton = this.querySelectorAll(".button")[0];
    this.messageEnd = this.querySelectorAll(".messageEnd")[0];
}