$(function(){

    $.datetimepicker.setLocale("zh-TW")
    $(".datepicker-date").each(function(){
        let _this = $(this),
            setting = {
                timepicker: false,
                format: 'Y/m/d',
                maxDate: _this.data("max-date")
            }
        _this.datetimepicker(setting)
    })

    //輸入8碼數字轉為日期格式
    $(document).on("input", ".datepicker-date", function(){
        let _this = $(this)
        let max = _this.data("max-date")
        let input = _this.val().replace(/\D/g,'')

        if(input.length === 8){
            let val = `${input.slice(0,4)}/${input.slice(4,6)}/${input.slice(6,8)}`
            if(max >= val){
                _this.val(val)
            }else {
                _this.val("")
            }
        }
    })
});