주어진 연도가 윤년인지 JavaScript를 사용하지 않는지 확인하는 코드는 다음과 같습니다. -
예시
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title>Document</title>
<style>
body {
font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
}
.result {
font-size: 18px;
font-weight: 500;
color: blueviolet;
}
</style>
</head>
<body>
<h1>Check Leap year or not</h1>
Enter the year<input class="year" type="text" />
<button class="Btn">CHECK</button>
<div class="result"></div>
<h3>Click on the above button check if the year above is leap year or not</h3>
<script>
let resultEle = document.querySelector(".result");
let yearEle = document.querySelector(".year");
document.querySelector(".Btn").addEventListener("click", () => {
if (yearEle.value % 4 == 0) {
resultEle.innerHTML = yearEle.value + " is a leap year ";
} else resultEle.innerHTML = yearEle.value + " is not a leap year";
});
</script>
</body>
</html> 출력
연도를 입력하고 '확인' 버튼을 클릭하면 -
