export class MessageUI { static warningMessage(text: string){ this.removeMessage(); let body = document.getElementById("body"); body.insertAdjacentHTML('afterbegin', `
${text}
`); } static removeMessage(id : string = null) { if(!id){ let messages = document.getElementsByClassName("message-info"); for (let i = 0; i < messages.length; i++){ messages.item(i).remove(); } return; } let previousElement = document.getElementById(id); if (!previousElement) { return; } previousElement.remove(); } }