단항(증감) 연산자(++, --)
=============================코드=============================
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Insert title here</title>
<script type="text/javascript">
// 단항(증감) 연산자(++, --)
let su1 = 10, su2 = 20;
document.write(`${++su1} <br/>`) // 11
document.write(`${su2++} <br/>`) // 20
document.write(`<hr>`);
let a = 10, b = 20, c = 3;
document.write(`${++a} <br>`) // 11
document.write(`${a++} <br>`) // 12
document.write(`${c++} <br>`) // 4
document.write(`${++a + b++} <br>`) // 13 + 20 ==> 33
document.write(`${++a + ++b} <br>`) // 14 + 22 ==> 36
</script>
</head>
<body>
</body>
</html>=============================실행=============================
