how to detect mobile device by javascript
While I understand and value the concept of feature detection over browser detection, sometimes the need for knowing whether or not we’re dealing with a mobile device arises. For in-depth device checking, you can rely on a complex library such as The MobileESP Project. But for simpler applications, the following snippet can be useful.
Syntax
if( /Android|webOS|iPhone|iPad|iPod|BlackBerry|IEMobile|Opera Mini/i.test(navigator.userAgent) ) {
alert('its a mobile device ')
}
else{
alert('its a desktop ')
}