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@@ -0,0 +1,123 @@
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+let messageId = 0;
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+
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+send.onclick = () => {
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+ jsonPost('http://students.a-level.com.ua:10012', {
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+ func: 'addMessage',
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+ nick: nick.value,
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+ message: message.value,
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+ });
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+};
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+
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+
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+function jsonPost(url, data) {
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+ return new Promise((resolve, reject) => {
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+ var x = new XMLHttpRequest();
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+ x.onerror = () => reject(new Error('jsonPost failed'));
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+ //x.setRequestHeader('Content-Type', 'application/json');
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+ x.open('POST', url, true);
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+ x.send(JSON.stringify(data));
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+
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+ x.onreadystatechange = () => {
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+ if (x.readyState === XMLHttpRequest.DONE && x.status === 200) {
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+ resolve(JSON.parse(x.responseText));
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+ } else if (x.status !== 200) {
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+ reject(new Error('status is not 200'));
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+ }
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+ };
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+ });
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+}
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+
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+setInterval(() => {
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+ jsonPost('http://students.a-level.com.ua:10012', {
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+ func: 'getMessages',
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+ messageId: messageId,
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+ }).then((result) => {
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+ for (let key in result.data) {
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+
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+ let div = document.createElement('div');
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+
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+ div.textContent = `${result.data[key].nick}:${result.data[key].message}`;
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+ let time = document.createElement('span');
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+
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+ let timeOfSending = new Date(result.data[key].timestamp);
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+ let minutes = '0' + timeOfSending.getMinutes();
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+ let seconds = '0' + timeOfSending.getSeconds();
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+ time.textContent = `Date: ${timeOfSending.getDate()}/${timeOfSending.getMonth() + 1}/${timeOfSending.getFullYear()}, time: ${timeOfSending.getHours()}:${minutes.substr(-2)}:${seconds.substr(-2)}`;
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+ chat.prepend(div);
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+ chat.prepend(time);
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+ }
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+
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+ messageId = result.nextMessageId;
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+ });
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+}, 3000);
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+
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+{
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+
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+ let messageId = 0;
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+
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+ send.onclick = async function sendAndCheck() {
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+
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+ await Promise.all([sendMessage('http://students.a-level.com.ua:10012', {
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+ func: 'addMessage',
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+ nick: nick.value,
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+ message: message.value,
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+ }), getMessages()]);
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+ };
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+
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+ async function sendMessage(url, data) {
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+
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+ const settings = {
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+ method: 'Post',
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+ mode: 'cors',
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+ cahe: 'no-cache',
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+ credentials: 'same-origin',
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+ headers: {
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+ 'Content-Type': 'application/x-www-form-urlencoded',
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+ },
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+ redirect: 'follow',
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+ referrerPolicy: 'no-referrer',
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+ body: JSON.stringify(data),
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+ };
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+
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+ try {
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+ let response = await fetch(url, settings);
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+ return response.json();
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+ } catch (error) {
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+ return console.log(error);
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+ }
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+
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+ }
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+}
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+
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+async function getMessages() {
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+ await sendMessage('http://students.a-level.com.ua:10012', {
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+ func: 'getMessages',
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+ messageId: messageId,
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+ }).then((resAll) => {
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+ for (let key in resAll.data) {
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+ let span = dociment.createElement('div');
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+ span.className = 'time';
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+
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+ span.textContent = `${resAll.data[key].nick}: ${resAll.data[key].messge}`;
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+ let time = document.createElement('span');
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+ time.className = 'time';
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+
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+ let timeOfSending = new Date(resAll.data[key].timestamp);
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+ let minutes = '0' + timeOfSending.getMinutes();
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+ time.textContent = `${timeOfSending.getDate()}.${timeOfSending.getMonth() + 1}.${timeOfSending.getFullYear()} ${timeOfSending.getHours()}:${minutes.substr(-2)}`;
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+ chat.prepend(time);
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+ chat.prepend(span);
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+ chat.prepend(document.createElement('hr'));
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+ }
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+
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+ messageId = resAll.nextMessageId;
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+ console.log(messageId);
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+
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+ });
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+}
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+
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+(function checkLoop() {
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+ setInterval(async () => {
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+ await getMessages();
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+ }, 3000);
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+})();
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