JS日常工作业务总结

组乱序

const shuffleArray = (arr) => arr.sort(() => Math.random() - 0.5) 
// 测试
const arr = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10];
console.log(shuffleArray(arr))

js复制到剪贴板

const copyToClipboard = (text) =>
  navigator.clipboard?.writeText && navigator.clipboard.writeText(text)

// 测试
copyToClipboard("Hello World!")

数组去重

const getUnique = (arr) => [...new Set(arr)]
// 测试
const arr = [1, 1, 2, 3, 3, 4, 4, 5, 5];
console.log(getUnique(arr))

检查黑暗模式

const isDarkMode = () => window.matchMedia &&
  window.matchMedia("(prefers-color-scheme: dark)").matches
// 测试
console.log(isDarkMode())

滚动到顶部

const scrollToTop = (element) =>
  element.scrollIntoView({ behavior: "smooth", block: "start" })。

滚动到底部

const scrollToBottom = (element) =>
  element.scrollIntoView({ behavior: "smooth", block: "end" })

生成随机颜色

const generateRandomHexColor = () =>
  `#${Math.floor(Math.random() * 0xffffff) .toString(16)}`

js关闭浏览器窗口

export const closeWindow = () => {
  var userAgent = navigator.userAgent
  if (userAgent.indexOf('Firefox') !== -1 || userAgent.indexOf('Chrome') !== -1) {
    window.location.replace('about:blank')
  } else {
    window.opener = null
    window.open('', '_self')
  }
  window.close()
}