script_landing_page.js

<!-- Script for extracting url params -->
    <script type="text/javascript">
      function setupCookie(cookieName, cookieValue) {
        var cookiePath = '/'
        var expirationTime = 2592000 //time the cookie should expire in seconds
        expirationTime = expirationTime * 1000 //Convert expirationtime to milliseconds
        var date = new Date() //Create new date
        var dateTimeNow = date.getTime() //What is the current time in milliseconds
        date.setTime(dateTimeNow + expirationTime) //Set expiration time
        var expirationTime = date.toUTCString() //Convert milliseconds to UTC time string
        document.cookie =
          cookieName +
          '=' +
          cookieValue +
          '; expires=' +
          expirationTime +
          '; path=' +
          cookiePath //Set cookie
      }
      function checkUrl() {
        var cookieName = 'trivago_pixel'
        var url = new URL(window.location.href)
        var cookieValue = url.searchParams.get('utm_source')
        if (cookieValue === 'Trivago') {
          setupCookie(cookieName, cookieValue)
          //extracting hotel id
          setupCookie('hotel', url.searchParams.get('hotelid'))
          //extracting dates
          setupCookie('arrival', url.searchParams.get('datein'))
          setupCookie('departure', url.searchParams.get('dateout'))
        }
      }
      checkUrl()
    </script>