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This article mainly explains "javascript how to implement browser user agent detection script," interested friends may wish to take a look. The method introduced in this paper is simple, fast and practical. Let's take you to learn "javascript how to implement browser user agent detection script"!

The following is a complete user agent string detection script that detects rendering engines, platforms, Windows operating systems, mobile devices, and gaming systems.

var client = function(){ //render engine var engine = { ie: 0, gecko: 0, webkit: 0, khtml: 0, opera: 0, //full version number ver: null }; //browser var browser = { //Main browser ie: 0, firefox: 0, safari: 0, konq: 0, opera: 0, chrome: 0, //specific version number ver: null }; //platform, device and operating system var system = { win: false, mac: false, x11: false, //Mobile devices iphone: false, ipod: false, ipad: false, ios: false, android: false, nokiaN: false, winMobile: false, //game system wii: false, ps: false }; //Detect rendering engines and browsers var ua = navigator.userAgent; if (window.opera){ engine.ver = browser.ver = window.opera.version(); engine.opera = browser.opera = parseFloat(engine.ver); } else if (/AppleWebKit\/(\S+)/.test(ua)){ engine.ver = RegExp["$1"]; engine.webkit = parseFloat(engine.ver); //Determine whether it is Chroeme or Safari if (/Chrome\/(\S+)/.test(ua)){ browser.ver = RegExp["$1"]; browser.chrome = parseFloat(browser.ver); } else if (/Version\/(\S+)/.test(ua)){ browser.ver = RegExp["$1"]; browser.safari = parseFloat(browser.ver); } else { //determine version number approximately var safariVersion = 1; if (engine.webkit

< 100){ safariVersion = 1; } else if (engine.webkit < 312){ safariVersion = 1.2; } else if (engine.webkit < 412){ safariVersion = 1.3; } else { safariVersion = 2; } browser.safari = browser.ver = safariVersion; } } else if (/KHTML\/(\S+)/.test(ua) || /Konqueror\/([^;]+)/.test(ua)){ engine.ver = browser.ver = RegExp["$1"]; engine.khtml = browser.konq = parseFloat(engine.ver); } else if (/rv:([^\)]+)\) Gecko\/\d{8}/.test(ua)){ engine.ver = RegExp["$1"]; engine.gecko = parseFloat(engine.ver); // 确定是不是Firefox if (/Firefox\/(\S+)/.test(ua)){ browser.ver = RegExp["$1"]; browser.firefox = parseFloat(browser.ver); } } else if (/MSIE ([^;]+)/.test(ua)){ engine.ver = browser.ver = RegExp["$1"]; engine.ie = browser.ie = parseFloat(engine.ver); } // 检测浏览器 browser.ie = engine.ie; browser.opera = engine.opera; // 检测平台 var p = navigator.platform; system.win = p.indexOf("Win") == 0; system.mac = p.indexOf("Mac") == 0; system.x11 = (p == "x11") || (p.indexOf("Linux") == 0); // 检测windows操作系统 if(system.win){ if(/win(?:dows )?([^do]{2})\s?(\d+\.\d+)?/.test(ua)){ if(RegExp["$1"] == "NT"){ switch(RegExp["$2"]){ case "5.0": system.win = "2000"; break; case "5.1": system.win = "XP"; break; case "6.0": system.win = "Vista"; break; case "6.1": system.win = "7"; break; default: system.win = "NT"; break; } } else if(RegExp["$1"] == "9x"){ system.win = "ME"; } else{ system.win = RegExp["$1"]; } } } // 移动设备 system.iphone = ua.indexOf("iPhone") >

-1; system.ipod = ua.indexOf("iPod") > -1; system.ipad = ua.indexOf("iPad") >-1; system.nokiaN = ua.indexOf("NokiaN") > -1; // windows mobile if(system.win == "CE"){ system.winMobile = system.win; } else if(system.win == "Ph" ){ if(/Windows Phone OS (\d+.\ d+)/.test(ua)){ system.win = "Phone"; system.winMobile = parseFloat(RegExp["$1"]); } } //detect IOS version if(system.mac && ua.indexOf("Mobile")> -1){ if(/CPU (?: Phone )? OS (\d+_\d+)/.test(ua)){ system.ios = parseFloat(RegExp.$ 1.replace("_",". ")); } else{ system.ios = 2; //can't really detect it, so can only guess } } //detect Android version if(/Android (\d+\.\ d+)/.test(ua)){ system.android = parseFloat(RegExp.$ 1); } //game system.wii = ua.indexOf("Wii") > -1; system.ps = /playstation/i.test(ua); //return these objects return { engine: engine, browser: browser, system: system }; // console.log(engine); // console.log(browser); // console.log(system); }(); At this point, I believe that everyone has a deeper understanding of "javascript how to implement browser user agent detection script", may wish to actually operate it! Here is the website, more related content can enter the relevant channels for inquiry, pay attention to us, continue to learn!

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