js recognizes the code of uc browser_javascript skills

It’s actually quite simple

if(navigator.userAgent.indexOf('UCBrowser') > -1) {
alert("uc浏览器");
}else｛
//不是uc浏览器执行的操作
｝

If you want to test the characteristics of a certain browser, you can obtain it through the following methods

JS gets browser information
Browser code name: navigator.appCodeName
Browser name: navigator.appName
Browser version number: navigator.appVersion
Support for Java: navigator.javaEnabled()
MIME types (array): navigator.mimeTypes
System platform: navigator.platform
Plugins (array): navigator.plugins
User agent: navigator.userAgent

Relatively complete

<script type="text/javascript"> 
document.write('浏览器判別：');
var OsObject=navigator.userAgent;
// 包含「Opera」文字列 
if(OsObject.indexOf("Opera") != -1) 
{ 
   document.write('您的浏览器是Opera吧？'); 
} 
// 包含「MSIE」文字列 
else if(OsObject.indexOf("MSIE") != -1) 
{ 
   document.write('您的浏览器是Internet Explorer吧？'); 
} 
// 包含「chrome」文字列 ，不过360浏览器也照抄chrome的UA

else if(OsObject.indexOf("Chrome") != -1) 
{ 
  document.write('您的浏览器是chrome或360浏览器吧？'); 
}
// 包含「UCBrowser」文字列 
else if(OsObject.indexOf("UCBrowser") != -1) 
{ 
  document.write('您的浏览器是UCBrowser吧？'); 
}
// 包含「BIDUBrowser」文字列 
else if(OsObject.indexOf("BIDUBrowser") != -1) 
{ 
  document.write('您的浏览器是百度浏览器吧？'); 
}
// 包含「Firefox」文字列 
else if(OsObject.indexOf("Firefox") != -1) 
{ 
  document.write('您的浏览器是Firefox吧？'); 
}
// 包含「Netscape」文字列 
else if(OsObject.indexOf("Netscape") != -1)
{ 
  document.write('您的浏览器是Netscape吧？'); 
} 
// 包含「Safari」文字列 
else if(OsObject.indexOf("Safari") != -1) 
{ 
   document.write('您的浏览器是Safari 吧？'); 
} 
else{ 
　 document.write('无法识别的浏览器。'); 
} 
</script> 

Many browsers are now based on the chrome browser, such as 360, Cheetah Browser, etc.