JQuery datepicker 在不需要选择时发出警报

Question

我在 NinjaForms 上使用了一个文本字段，并在上面选择了一个日期选择器。

我需要的是当他/她选择一个距离当前日期不到 2 个工作日的日期时向用户显示警报。

有人帮我写代码吗？

Answer 1

Demo Fiddle || Updated fiddle persisting the date || Updated fiddle with 'dd-mm-yy' dateFormat

您可以计算日期选择器onClose事件的日期差异，并可以根据需要显示警报..

jQuery 代码：

$('#txt').datepicker({
    onClose: function (selectedDate) {
        var oneday = 1000 * 60 * 60 * 24; //ms*sec*min*hrs
        var today = new Date();
        var selected = new Date(selectedDate);
        var diff = parseInt((selected - today) / oneday);//difference between the two dates
        if (diff <= -14) {
            alert("Not Good... Two weeks have passed..");
            $('#txt').val('');//Remove this to keep the dates
        } else if (diff <= 14 && diff >= 0) {
            alert("Not Good... Please give us 2 weeks..");
            $('#txt').val('');//Remove this to keep the dates
        }
    }
});