How does JavaScript dynamically determine the browser type? (code example)

The content of this article is to introduce how JavaScript can dynamically determine the browser type? (code example). It has certain reference value. Friends in need can refer to it. I hope it will be helpful to you.

This is just a little bit of knowledge. I found it online. It’s very useful!

Dynamicly determine whether the browser is PC or mobile!

<script>
var browser={    
versions:function(){            
var u = navigator.userAgent, app = navigator.appVersion;            
return {                
trident: u.indexOf('Trident') > -1, //IE内核                
presto: u.indexOf('Presto') > -1, //opera内核                
webKit: u.indexOf('AppleWebKit') > -1, //苹果、谷歌内核                
gecko: u.indexOf('Gecko') > -1 && u.indexOf('KHTML') == -1, //火狐内核                
mobile: !!u.match(/AppleWebKit.*Mobile.*/)||!!u.match(/AppleWebKit/), //是否为移动终端                
ios: !!u.match(/\(i[^;]+;( U;)? CPU.+Mac OS X/), //ios终端                
android: u.indexOf('Android') > -1 || u.indexOf('Linux') > -1, //android终端或者uc浏览器                
iPhone: u.indexOf('iPhone') > -1 || u.indexOf('Mac') > -1, //是否为iPhone或者QQHD浏览器                
iPad: u.indexOf('iPad') > -1, //是否iPad                
webApp: u.indexOf('Safari') == -1 //是否web应该程序，没有头部与底部            
};
}()
} 

document.writeln(" 是否为移动终端: "+browser.versions.mobile);
document.writeln(" ios终端: "+browser.versions.ios);
document.writeln(" android终端: "+browser.versions.android);
document.writeln(" 是否为iPhone: "+browser.versions.iPhone);
document.writeln(" 是否iPad: "+browser.versions.iPad);
document.writeln(navigator.userAgent); 
</script>

Very interesting!

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