<![CDATA[
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>무작위로 배경색 바꾸기</title>
<link rel="stylesheet" href="style_js.css">
<body>
<script>
const letters = "0123456789ABCDEF";
let color = "#";
let count = 1;
let intervalID = setInterval(changeColor, 1000);
function changeColor() {
if (++count > 25)
clearInterval(intervalID);
for (let k = 0; k < 6; k++)
color += letters[Math.floor(Math.random()*16)];
document.write("<div style='background-color:"
+ color + "'>" + color + "</div>");
color = "#"; // 16진수 문자열 초기화
}
</script>
</body>
</html>
]]>