我正在尝试使用 JavaScript 来验证所选日期不早于今天,但是当我选择今天的日期时,它会显示警报框。
JavaScript:
function checkDueDate(sender, args) {
var td = new Date();
td.setMinutes(59);
td.setSeconds(59);
td.setHours(23);
//to move back one day
td.setDate(td.getDate() - 1);
if (sender._selectedDate < td) {
alert("You can't select day from the past! " + td + "");
sender._selectedDate = new Date();
// set the date back to the current date
sender._textbox.set_Value(sender._selectedDate.format(sender._format))
}
ASP.NET:
<asp:TextBox ID="txtDueDate" runat="server"></asp:TextBox>
<asp:CalendarExtender ID="txtDueDate_CalendarExtender" runat="server"
TargetControlID="txtDueDate" OnClientDateSelectionChanged="checkDueDate">
</asp:CalendarExtender>