javascript_practice/hw13/stage6.js

const jsonPost = async (url, data) => {
	try {
		const response = await fetch(url, {
			method: 'POST',
			body: JSON.stringify(data)
		});
		if (!response.ok) {
			new Error(`An error has occurred: ${response.status}`);
		} else {
			return JSON.parse(await response.text());
		}
	} catch (e) {
		return e;
	}
}

const url = "http://students.a-level.com.ua:10012";

sendButton.addEventListener('click', async () => {
	let nickValue = nickInput.value;
	let messageValue = messageInput.value;

	const newPost = await jsonPost(url, {
			func: 'addMessage',
			nick: nickValue,
			message: messageValue
		}
	);

	console.log(newPost.nextMessageId);
});