var DatePicker = tui.DatePicker; // or require('tui-date-picker');
var rangepicker = DatePicker.createRangePicker({
    startpicker: {
        input: '#start-input',
        container: '#start-container'
    },
    endpicker: {
        input: '#end-input',
        container: '#end-container'
    },
    type: 'date',
    format: 'yyyy-MM-dd'
    selectableRanges: [
        [new Date(2017, 3, 1), new Date(2017, 5, 1)],
        [new Date(2017, 6, 3), new Date(2017, 10, 5)]
    ]
});