영상
개념
<!DOCTYPE html>
<html lang="ko">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
</head>
<body id="target">
<button onclick="changeColor()">배경색 바꾸기</button>
<script>
let colorList = ["yellow", "aqua", "purple", "white"];
let i = 0;
function changeColor() {
let target = document.getElementById("target");
target.style.backgroundColor = colorList[i];
i += 1;
if(i >= colorList.length) {
i = 0;
}
}
</script>
</body>
</html>
Java
복사