disable past dates on datepicker

Question

How to disable past dates from the current date on a datetimepicker? I tried few posts for similar question but was unable to achieve it, Below is what I tried

Answer 1

Note: This scripts works when you're using the daterangepicker library. If you want to disable the Sat or Sunday date on daterangepicker then put this line of code.

        $("#event_start").daterangepicker({
            // minDate: new Date(),
            minYear: 2000,
            showDropdowns: true,
            singleDatePicker: true,
            timePicker: true,
            timePicker24Hour: false,
            timePickerIncrement: 15,
            drops:"up",
            isInvalidDate: function(date) {
                //return true if date is sunday or saturday
                return (date.day() == 0 || date.day() == 6);
            },
            locale: {
                format: 'MM/DD/YYYY hh:mm A'
            }
        });

OR if you want to disable the previous date also with sat and sun then uncomment the this line minDate: new Date()