🎨 本地壁纸轮换系统

/* 使用第1张壁纸作为背景 */
body {
  background-image: url('https://bingpic.52xxzl.top/images/1.jpg');
  background-size: cover;
  background-position: center;
  background-attachment: fixed;
}

/* JavaScript随机选择壁纸 */
var randomNum = Math.floor(Math.random() * 10) + 1;
document.body.style.backgroundImage =
  "url('https://bingpic.52xxzl.top/images/" + randomNum + ".jpg')";
document.body.style.backgroundSize = "cover";
document.body.style.backgroundPosition = "center";

/* 根据日期自动选择（每天不同） */
var today = new Date().getDate(); // 获取今天是几号
var wallpaperNum = (today % 10) + 1; // 1-10循环
var bgUrl = 'https://bingpic.52xxzl.top/images/' + wallpaperNum + '.jpg';
document.body.style.backgroundImage = 'url(' + bgUrl + ')';