CODEWITHSUNDEEP
c#javascriptasp.netdatetime
user42348
user42348

Reputation: 4319

how to validate datetime format

I have a textbox for entering date.Textbox should allow only dd/MM/yyyy format.How can i check it using javascript

Upvotes: 0

Views: 943

Answers (2)

Salman Arshad
Salman Arshad

Reputation: 272416

You're using dd/mm/yyyy to validate dates -- you can use the JavaScript date object to validate dates but its trickier in this case:

var o = document.form1.date1; // o is a reference to the textbox
var r = /^(\d+)\/(\d+)\/(\d+)$/.exec( o.value ); // extract day, month and year
if ( ! r )
{
  // invalid date -- pattern matching failed
}
var d = parseInt( r[ 1 ], 10 );
var m = parseInt( r[ 2 ], 10 );
var y = parseInt( r[ 3 ], 10 );
var c = new Date( y, m - 1, d ); // month is zero based but year and day are not
if ( isNaN( c ) )
{
  // invalid date -- javascript could not make a date out of the three numbers
}

Upvotes: 1

Mark Brackett
Mark Brackett

Reputation: 85685

If you're using WebForms, just use a CompareValidator:

<asp:CompareValidator runat="server" ControlToValidate="txtInput" Type="Date"
 Operator="DataTypeCheck" ErrorMessage="That's not a valid date!" />

Upvotes: 2

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