Question

我正在使用bootstrap插件作为datepicker，我写了一个函数来检查它是否是今天使用纯粹的js ..

什么都没发生，我想知道为什么.. datepicker值的格式如dd / mm / yyyy

var datepicker = $('#datepicker').val();

        checkToday(datepicker);

        function checkToday(datepicker){
            datepickerDay =  datepicker.slice(0, datepicker.indexOf('/'));
            var d = new Date();
            var dToday = d.getDate() ;
            dToday.toString();

            if(datepickerDay == dToday){
                return "Today"
                alert('Today');
            }
            else{
                return datepicker;
                alert(datepicker);
            }
        }

Answer 1

不要使用 parseInt 也不能在返回后放任何东西

var datepicker = $('#datepicker').val();


    function checkToday(datepicker) {
        datepickerDay = datepicker.slice(0, datepicker.indexOf('/'));
        var d = new Date();
        var dToday = d.getDate();
        dToday.toString();

        if (datepickerDay == dToday) {
            return "Today";

        } else {
            return datepicker;

        }
    }

    alert(checkToday(datepicker));

WORKING DEMO

Answer 2

您可以转换日期格式的日期，然后按日期，月份和年份进行比较。

试试这个

 function checkToday(datepicker){
        var datepickerDay =  new Date(datepicker); //creating date object from string 'mm/dd/yyyy'
        var d = new Date(); // date object

// now lets comapare date, Month and year to get correct result 
        if(d.getDate()==datepicker.getDate() && d.getMonth()==datepicker.getMonth() && d.getYear()==datepicker.getYear()){
            return "Today"
            alert('Today');
        }
        else{
            return datepicker;
            alert(datepicker);
        }
    }

希望这会有所帮助......

如果今天检查日期并返回今天或正常日期

2 个答案: