这次给大家带来JS怎样检测浏览器内的脚本,JS检测浏览器内脚本的注意事项有哪些,下面就是实战案例,一起来看一下。
以下是完整的用户代理字符串检测脚本,包括检测呈现引擎、平台、Windows操作系统、移动设备和游戏系统。
var client = function(){ // 呈现引擎 var engine = { ie: 0, gecko: 0, webkit: 0, khtml: 0, opera: 0, // 完整的版本号 ver: null }; // 浏览器 var browser = { // 主要浏览器 ie: 0, firefox: 0, safari: 0, konq: 0, opera: 0, chrome: 0, // 具体的版本号 ver: null }; // 平台、设备和操作系统 var system = { win: false, mac: false, x11: false, // 移动设备 iphone: false, ipod: false, ipad: false, ios: false, android: false, nokiaN: false, winMobile: false, // 游戏系统 wii: false, ps: false }; // 检测呈现引擎和浏览器 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); // 确定是Chroeme还是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 { // 近似地确定版本号 var safariVersion = 1; if (engine.webkit -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"]); } } // 检测IOS版本 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; // 不能真正检测出来,所以只能猜测 } } // 检测Android版本 if(/Android (\d+\.\d+)/.test(ua)){ system.android = parseFloat(RegExp.$1); } // 游戏系统 system.wii = ua.indexOf("Wii") > -1; system.ps = /playstation/i.test(ua); // 返回这些对象 return { engine: engine, browser: browser, system: system }; // console.log(engine); // console.log(browser); // console.log(system); }();
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