JS判断浏览器当前运行环境

JS判断浏览器当前运行环境

function BrowserType() { 
  // 权重：系统 + 系统版本 > 平台 > 内核 + 载体 + 内核版本 + 载体版本 > 外壳 + 外壳版本
  const ua = navigator.userAgent.toLowerCase();
  const testUa = regexp => regexp.test(ua);
  const testVs = regexp => (ua.match(regexp) + "")
    .replace(/[^0-9|_.]/ig, "")
    .replace(/_/ig, ".");
    
  // 系统
  let system = "unknown";
  if (testUa(/windows|win32|win64|wow32|wow64/ig)) {
    system = "windows"; // window系统
  } else if (testUa(/macintosh|macintel/ig)) {
    system = "osx"; // osx系统
  } else if (testUa(/x11/ig)) {
    system = "linux"; // linux系统
  } else if (testUa(/android|adr/ig)) {
    system = "android"; // android系统
  } else if (testUa(/ios|iphone|ipad|ipod|iwatch/ig)) {
    system = "ios"; // ios系统
  }
  
  // 系统版本
  let systemVs = "unknown";
  if (system === "windows") {
    if (testUa(/windows nt 5.0|windows 2000/ig)) {
      systemVs = "2000";
    } else if (testUa(/windows nt 5.1|windows xp/ig)) {
      systemVs = "xp";
    } else if (testUa(/windows nt 5.2|windows 2003/ig)) {
      systemVs = "2003";
    } else if (testUa(/windows nt 6.0|windows vista/ig)) {
      systemVs = "vista";
    } else if (testUa(/windows nt 6.1|windows 7/ig)) {
      systemVs = "7";
    } else if (testUa(/windows nt 6.2|windows 8/ig)) {
      systemVs = "8";
    } else if (testUa(/windows nt 6.3|windows 8.1/ig)) {
      systemVs = "8.1";
    } else if (testUa(/windows nt 10.0|windows 10/ig)) {
      systemVs = "10";
    }
  } else if (system === "osx") {
    systemVs = testVs(/os x [\d._]+/ig);
  } else if (system === "android") {
    systemVs = testVs(/android [\d._]+/ig);
  } else if (system === "ios") {
    systemVs = testVs(/os [\d._]+/ig);
  }
  
  // 平台
  let platform = "unknow";
  if (system === "windows" || system === "osx" || system === "linux") {
    platform = "desktop"; // 桌面端
  } else if (system === "android" || system === "ios" || testUa(/mobile/ig)) {
    platform = "mobile"; // 移动端
  }
  
  // 内核和载体
  let engine = "unknow";
  let supporter = "unknow";
  if (testUa(/applewebkit/ig) && testUa(/safari/ig)) {
    engine = "webkit"; // webkit内核
    if (testUa(/edge/ig)) {
      supporter = "edge"; // edge浏览器
    } else if (testUa(/opr/ig)) {
      supporter = "opera"; // opera浏览器
    } else if (testUa(/chrome/ig)) {
      supporter = "chrome"; // chrome浏览器
    } else {
      supporter = "safari"; // safari浏览器
    }
  } else if (testUa(/gecko/ig) && testUa(/firefox/ig)) {
    engine = "gecko"; // gecko内核
    supporter = "firefox"; // firefox浏览器
  } else if (testUa(/presto/ig)) {
    engine = "presto"; // presto内核
    supporter = "opera"; // opera浏览器
  } else if (testUa(/trident|compatible|msie/ig)) {
    engine = "trident"; // trident内核
    supporter = "iexplore"; // iexplore浏览器
  }
  
  // 内核版本
  let engineVs = "unknow";
  if (engine === "webkit") {
    engineVs = testVs(/applewebkit\/[\d.]+/ig);
  } else if (engine === "gecko") {
    engineVs = testVs(/gecko\/[\d.]+/ig);
  } else if (engine === "presto") {
    engineVs = testVs(/presto\/[\d.]+/ig);
  } else if (engine === "trident") {
    engineVs = testVs(/trident\/[\d.]+/ig);
  }
  
  // 载体版本
  let supporterVs = "unknow";
  if (supporter === "chrome") {
    supporterVs = testVs(/chrome\/[\d.]+/ig);
  } else if (supporter === "safari") {
    supporterVs = testVs(/version\/[\d.]+/ig);
  } else if (supporter === "firefox") {
    supporterVs = testVs(/firefox\/[\d.]+/ig);
  } else if (supporter === "opera") {
    supporterVs = testVs(/opr\/[\d.]+/ig);
  } else if (supporter === "iexplore") {
    supporterVs = testVs(/(msie [\d.]+)|(rv:[\d.]+)/ig);
  } else if (supporter === "edge") {
    supporterVs = testVs(/edge\/[\d.]+/ig);
  }
  
  // 外壳和外壳版本
  let shell = "none";
  let shellVs = "unknow";
  if (testUa(/micromessenger/ig)) {
    shell = "wechat"; // 微信浏览器
    shellVs = testVs(/micromessenger\/[\d.]+/ig);
  } else if (testUa(/qqbrowser/ig)) {
    shell = "qq"; // QQ浏览器
    shellVs = testVs(/qqbrowser\/[\d.]+/ig);
  } else if (testUa(/ubrowser/ig)) {
    shell = "uc"; // UC浏览器
    shellVs = testVs(/ubrowser\/[\d.]+/ig);
  } else if (testUa(/2345explorer/ig)) {
    shell = "2345"; // 2345浏览器
    shellVs = testVs(/2345explorer\/[\d.]+/ig);
  } else if (testUa(/metasr/ig)) {
    shell = "sougou"; // 搜狗浏览器
  } else if (testUa(/lbbrowser/ig)) {
    shell = "liebao"; // 猎豹浏览器
  } else if (testUa(/maxthon/ig)) {
    shell = "maxthon"; // 遨游浏览器
    shellVs = testVs(/maxthon\/[\d.]+/ig);
  } else if (testUa(/bidubrowser/ig)) {
    shell = "baidu"; // 百度浏览器
    shellVs = testVs(/bidubrowser [\d.]+/ig);
  }
  
  return Object.assign({
    engine, // webkit gecko presto trident
    engineVs,
    platform, // desktop mobile
    supporter, // chrome safari firefox opera iexplore edge
    supporterVs,
    system, // windows osx linux android ios
    systemVs
  }, shell === "none" ? {} : {
    shell, // wechat qq uc 2345 sougou liebao maxthon baidu
    shellVs
  });
}