Script for detecting browsers

BrowserDetect.js

const BrowserDetect = {
  init: () => {
    BrowserDetect.browser = BrowserDetect.searchString(BrowserDetect.dataBrowser) || 'Other';
    BrowserDetect.version = BrowserDetect.searchVersion(navigator.userAgent) || BrowserDetect.searchVersion(navigator.appVersion) || 'Unknown';
  },
  searchString: (data) => {
    for (let i = 0; i < data.length; i++) {
      let dataString = data[i].string;
      BrowserDetect.versionSearchString = data[i].subString;

      if (dataString.indexOf(data[i].subString) !== -1) {
        return data[i].identity;
      }
    }
  },
  searchVersion: (dataString) => {
    const index = dataString.indexOf(BrowserDetect.versionSearchString);
    if (index === -1) {
      return;
    }

    const rv = dataString.indexOf('rv:');
    if (BrowserDetect.versionSearchString === 'Trident' && rv !== -1) {
      return parseFloat(dataString.substring(rv + 3));
    } else {
      return parseFloat(dataString.substring(index + BrowserDetect.versionSearchString.length + 1));
    }
  },

  dataBrowser: [{
      string: navigator.userAgent,
      subString: 'Edge',
      identity: 'MS Edge'
    }, {
      string: navigator.userAgent,
      subString: 'MSIE',
      identity: 'Explorer'
    }, {
      string: navigator.userAgent,
      subString: 'Trident',
      identity: 'Explorer'
    }, {
      string: navigator.userAgent,
      subString: 'Firefox',
      identity: 'Firefox'
    }, {
      string: navigator.userAgent,
      subString: 'Opera',
      identity: 'Opera'
    }, {
      string: navigator.userAgent,
      subString: 'OPR',
      identity: 'Opera'
    },

    {
      string: navigator.userAgent,
      subString: 'Chrome',
      identity: 'Chrome'
    }, {
      string: navigator.userAgent,
      subString: 'Safari',
      identity: 'Safari'
    }
  ]
};

BrowserDetect.init();
console.log('Your browser: ' + BrowserDetect.browser + ', version: ' + BrowserDetect.version + '</b>');