JS judges mobile phone brand

Judge mobile phone brand with regularity

var userAgent = navigator.userAgent;

if(userAgent.match(/vivo/!)){
    
    
console.log("这是vivo手机")
}else if(userAgent.match(/samsung/i)){
    
    
console.log("这是三星手机")
}else if(userAgent.match(/huawei/i)){
    
    
cosole.log("这是华为手机")
}else if(....){
    
    
........
}

Judgment System

  var userAgent = navigator.userAgent;
  var isAndroid = userAgent.indexOf('Android') > -1 || u.indexOf('Adr') > -1; 
                
var isiOS = !!u.match(/\(i[^;]+;( U;)? CPU.+Mac OS X/); 

if(isAndroid){
    
    
console.log("按照系统")
}else if(isios){
    
    
console.log("ios系统")
}