SOURCE

// 数组重排序
const shuffle = (arr) => {
   return arr.sort(() => {
      return Math.random() - 0.5
   })
}

const arr = [1, 2, 3, 4, 5]
console.log(shuffle(arr))

const isDarkMode = () => window.matchMedia && window.matchMedia("(prefers-color-scheme: dark)").matches;

console.log(isDarkMode())