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@@ -0,0 +1,122 @@
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+// let table = document.createElement("table");
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+// table.setAttribute("border", "1");
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+// let tbdy = document.createElement("tbody");
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+// let tr = document.createElement("tr");
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+// for (let h = 0; h < 10; h++) {
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+// let th = document.createElement("th");
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+// th.innerText = h;
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+// tr.appendChild(th);
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+// tbdy.appendChild(tr);
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+// }
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+// for (let i = 1; i < 10; i++) {
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+// let tr = document.createElement("tr");
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+// let td = document.createElement("td");
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+// td.innerText = i;
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+// tr.appendChild(td);
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+// for (let j = 1; j < 10; j++) {
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+// let td = document.createElement("td");
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+// td.innerText = i * j;
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+// tr.appendChild(td);
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+// }
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+// tbdy.appendChild(tr);
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+// }
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+// table.appendChild(tbdy);
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+// document.body.appendChild(table);
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+
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+// let readyTable = document.querySelector("table");
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+// const changeBg = (event, cellColor, rowColor) => {
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+// try {
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+// const target = event.target;
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+// const index = event.srcElement.cellIndex;
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+// const rows = document.querySelectorAll("tr");
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+// target.parentNode.style.background = rowColor;
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+// for (let i = 0; i < rows.length; i++) {
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+// rows[i].childNodes[index].style.background = rowColor;
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+// target.style.background = cellColor;
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+// }
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+// } catch (err) {}
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+// };
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+
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+// readyTable.onmouseover = (event) => changeBg(event, "yellow", "pink");
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+// readyTable.onmouseout = (event) => changeBg(event, "", "");
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+
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+// Calc && Calc Live
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+
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+// async function fetchCurrency() {
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+// try {
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+// const response = await fetch(
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+// "https://api.coingecko.com/api/v3/exchange_rates"
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+// );
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+// const currency = await response.json();
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+// return currency.rates;
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+// } catch (error) {
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+// console.error(error);
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+// }
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+// }
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+
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+// async function renderCurrency() {
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+// const currencies = await fetchCurrency();
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+// const curArray = [];
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+// for (let key in currencies) {
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+// curArray.push(key);
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+// }
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+// let firstSelect = document.querySelector("#firstSelect");
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+// for (let i = 0; i < curArray.length; i++) {
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+// let option = document.createElement("option");
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+// option.setAttribute("selected", curArray[0]);
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+// option.setAttribute("value", curArray[i]);
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+// option.innerHTML = currencies[curArray[i]]["name"];
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+// firstSelect.appendChild(option);
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+// }
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+// return currencies;
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+// }
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+
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+// renderCurrency();
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+
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+// let input = document.querySelector("#firstInput");
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+// let cur1 = document.querySelector("#firstCurrency");
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+// let cur2 = document.querySelector("#secondCurrency");
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+// input.oninput = function () {
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+// convert();
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+// };
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+// cur1.oninput = function () {
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+// convert();
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+// };
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+// cur2.oninput = function () {
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+// convert();
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+// };
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+
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+// async function convert() {
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+// const objCur = await renderCurrency();
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+// const curArray = [];
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+// for (let key in objCur) {
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+// curArray.push(key);
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+// }
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+// let currency1 = document.querySelector("#firstCurrency");
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+// let currency2 = document.querySelector("#secondCurrency");
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+// let value1 = document.querySelector("#firstInput");
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+// let value2 = document.querySelector("#secondInput");
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+// if (!currency1.value) {
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+// currency1.value = "btc";
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+// }
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+// if (!currency2.value) {
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+// currency2.value = "usd";
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+// }
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+// if (value1.value === "" || +value1.value <= 0) {
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+// alert(
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+// "Не введено число / Введено неккоректное число\nПоставлено число по умолчанию - 1"
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+// );
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+// value1.value = 1;
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+// }
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+// if (currency1.value === currency2.value) {
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+// value2.value = value1.value;
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+// }
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+// if (currency2.value === "btc") {
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+// value2.value = objCur[currency1.value]["value"];
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+// }
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+// if (currency1.value !== currency2.value) {
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+// value2.value =
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+// (value1.value ** 2 * objCur[currency2.value]["value"]) /
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+// (value1.value / (1 / objCur[currency1.value]["value"]));
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+// }
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+// }
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