snkn.js checkBrowser

checkBrowser.js

function checkBrowser(){
  var a='';
  var b={};
  b.name=window.navigator.userAgent.toLowerCase();
  b.platform=window.navigator.platform.toLowerCase();
  b.isMac=(b.platform.indexOf('mac')>=0);
  b.isWin=(b.platform.indexOf('win')>=0);
  b.isCrOS=(b.platform.indexOf('linux')>=0 && b.name.indexOf('cros')>=0);
  b.isIE=(b.name.indexOf('msie')>=0||b.name.indexOf('trident')>=0);
  b.isSafari=b.name.indexOf('safari')>=0;
  b.isChrome=b.name.indexOf('chrome')>=0;
  b.isFirefox=b.name.indexOf('firefox')>=0;
  b.isiPhone=b.name.indexOf('iphone')>=0;
  b.isiPod=b.name.indexOf('ipod')>=0;
  b.isiPad=b.name.indexOf('ipad')>=0;
  b.isiOS=(b.isiPhone||b.isiPod||b.isiPad);
  b.isAndroid=b.name.indexOf('android')>=0;
  b.isTablet=(b.isiPad||(b.isAndroid&&b.name.indexOf('mobile')<0));

  if (b.isMac) {
    b.verArray=/(mac\sos\sx)\s([0-9]+)[_\.]([0-9]+)[_\.]?([0-9]?)/.exec(b.name);
    if (b.verArray) {
      b.osMjrVer=parseInt(b.verArray[2]);
      b.osMinVer=parseInt(b.verArray[3])
    }
  } else if (b.isWin){
    if (b.name.match(/win(dows )?nt 6\.3/)) {
      b.osMjrVer=parseInt(8);
      b.osMinVer=parseInt(1)
    } else if (b.name.match(/win(dows )?nt 6\.2/)) {
      b.osMjrVer=parseInt(8);
      b.osMinVer=parseInt(0)
    } else if (b.name.match(/win(dows )?nt 6\.1/)) {
      b.osMjrVer=parseInt(7);
      b.osMinVer=parseInt(0)
    } else if (b.name.match(/win(dows )?nt 6\.0/)) {
      b.osMjrVer=parseInt(6);
      b.osMinVer=parseInt(0)
    } else {
      b.osMjrVer=parseInt(5);
      b.osMinVer=parseInt(0)
    }
  }

  if (b.isIE) {
    b.verArray=/(msie|rv:?)\s?([0-9]{1,})([\.0-9]{1,})/.exec(b.name);
    if (b.verArray) {
      b.ver=parseInt(b.verArray[2])
    }
  }
  if (b.isiOS||b.isAndroid) {
    return false
  } else if (b.isMac&&b.osMjrVer*10+b.osMinVer>=106) {
    if(b.isSafari||b.isChrome||b.isFirefox){
      return true
    }
  } else if (b.isWin&&b.osMjrVer>=6) {
    if (b.isIE&&b.ver>=9) {
      return true
    } else if (b.isSafari||b.isChrome||b.isFirefox) {
      return true
    }
  } else if (b.isCrOS) {
    return true
  }
  return false
}