Answers for "how to tell if website on mobile javascript"

js if mobile browser

// credit to Timothy Huang for this regex test: 
// https://dev.to/timhuang/a-simple-way-to-detect-if-browser-is-on-a-mobile-device-with-javascript-44j3
if(/Android|webOS|iPhone|iPad|iPod|BlackBerry|IEMobile|Opera Mini/i.test(navigator.userAgent)){
  return true
}
else{
  return false
}

know if a mobile open the website js

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