=============================코드=============================
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Insert title here</title>
<script type="text/javascript">
// 산술연산자(+, -, *, /, %)
let num1 = 15, num2 = 4, result;
result = num1 + num2;
document.write(num1 + " + " + num2 + " = " + result + "<br/>");
result = num1 - num2;
document.write(`${num1} - ${num2} = ${result} <br/>`);
result = num1 * num2;
document.write(`${num1} * ${num2} = ${result} <br/>`);
result = num1 / num2;
document.write(`${num1} / ${num2} = ${result.toFixed(2)} <br/>`);
result = num1 % num2;
document.write(`${num1} % ${num2} = ${result} <br/>`);
document.write(`<hr>`);
let tab = "<table border='1' width='150'>";
tab += "<tr>"; // tab = tab + "tr"; // 행
tab += "<th>" + num1 + " + " + num2 + "</th>";
tab += "<td>" + (num1+num2) + "</td>";
tab += "</tr>";
tab += "<tr>"; // tab = tab + "tr";
tab += "<th>" + num1 + " - " + num2 + "</th>";
tab += "<td>" + (num1-num2) + "</td>";
tab += "</tr>";
tab += "<tr>"; // tab = tab + "tr";
tab += "<th>" + num1 + " * " + num2 + "</th>";
tab += "<td>" + (num1*num2) + "</td>";
tab += "</tr>";
tab += "<tr>"; // tab = tab + "tr";
tab += "<th>" + num1 + " / " + num2 + "</th>";
tab += "<td>" + (num1/num2) + "</td>";
tab += "</tr>";
tab += "<tr>"; // tab = tab + "tr";
tab += "<th>" + num1 + " % " + num2 + "</th>";
tab += "<td>" + (num1%num2) + "</td>";
tab += "</tr></table>";
document.write(tab);
</script>
</head>
<body>
</body>
</html>=============================실행=============================
