Detecting a Mobile Browser

 function detectMobileBrowser() {
  const userAgent = navigator.userAgent

  if (
    userAgent.match(/Android/i) ||
    userAgent.match(/webOS/i) ||
    userAgent.match(/iPhone/i) ||
    userAgent.match(/iPad/i) ||
    userAgent.match(/iPod/i) ||
    userAgent.match(/BlackBerry/i) ||
    userAgent.match(/Windows Phone/i)) {
    return true
  }

  return false
}
 

 function detectMobileBrowser() {
  const userAgent = navigator.userAgent.toLowerCase()
  const agents = [
    'android',
    'webos',
    'iphone',
    'ipad',
    'ipod',
    'blackberry',
    'windows phone',
  ]

  return agents.some((agent) => userAgent.includes(agent))
}