i have bit of code:
<body> <form id="form1" runat="server"> <div> <asp:textbox runat="server" id="textbox1" text="10/20/2013" onchange="javascript:myfunc();"></asp:textbox> <asp:textbox runat="server" id="textbox2" text=""></asp:textbox> </div> </form> <script type="text/javascript"> function myfunc() { mytextbox = document.getelementbyid("<%= textbox1.clientid %>"); mytextbox2 = document.getelementbyid("<%= textbox2.clientid %>"); var date = new date(mytextbox.value); var day = date.getdate(); var month = date.getmonth() + 1; var year = date.getfullyear() + 1; mytextbox2.value = day + "/" + month + "/" + year; } </script> </body> which 2 textboxes , when first textbox date updated second textbox value becomes date textbox 1 + 1 year.
the code works fine except 1 issue. in textbox1 date must in format mm/dd/yyyy wrong. example if want change 20/10/2013 20/10/2014 must enter 10/20/2013 in first textbox.
how can work dd/mm/yyyy?
the date constructor can't directly take dd/mm/yyyy format, have parse date input:
var temp = mytextbox.value.split('/'); var date = new date(temp[2], temp[1]-1, temp[0]); the above parses day, month , year text input, passes each value date constructor. works because 1 of overloads constructor. note month 0 based, need decrement 1.
from mdn:
new date(year, month, day [hour, minute, second, millisecond]);
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