Date range between days

date.js

   let isWeekend = new Date();
        const months = ["Jan", "Feb", "Mar", "Apr", "May", "June", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"]
        console.log(isWeekend.getDay())
        if (isWeekend.getDay() == 6 || isWeekend.getDay() == 0) {

            let todayIsWeekendStart = new Date();
            todayIsWeekendStart.setDate(todayIsWeekendStart.getDate() + (((1 + 7 - todayIsWeekendStart.getDay()) % 7) || 7) + 7);
            let weekend_Start = todayIsWeekendStart.getDate() + " " + (months[todayIsWeekendStart.getMonth()]) + " " + todayIsWeekendStart.getFullYear();

            let todayIsWeekendEnd = new Date();
            todayIsWeekendEnd.setDate(todayIsWeekendStart.getDate() + 6);
            let weekend_End = todayIsWeekendEnd.getDate() + " " + (months[todayIsWeekendEnd.getMonth()]) + " " + todayIsWeekendEnd.getFullYear();

            console.log(weekend_Start + " - " + weekend_End)
            document.getElementsByClassName("date_of_webinar")[0].textContent = weekend_Start + " - " + weekend_End;

            //$(".date_of_webinar").text(weekend_Start + " - " + weekend_End);

        } else {
            var StartDate = new Date();
            StartDate.setDate(StartDate.getDate() + (((1 + 7 - StartDate.getDay()) % 7) || 7));

            let Start = StartDate.getDate() + " " + (months[StartDate.getMonth()]) + " " + StartDate.getFullYear();
            var EndDate = new Date();
            EndDate.setDate(StartDate.getDate() + 6)
            let End = EndDate.getDate() + " " + (months[EndDate.getMonth()]) + " " + EndDate.getFullYear()
            console.log(Start + " -- " + End)
            //$(".date_of_webinar").text(Start + " - " + end);
            document.getElementsByClassName("date_of_webinar")[0].textContent = Start + " - " + End;
            // (".date_of_webinar").text("9 Jan 2022-16 Jan 2022");
        }