how to validate mobile no client side in asp.net

Question

Naresh Avari · Answer

Hi Deepak Validation: Either 8 digit number(which starts with 2) OR 10 digit number (which starts with 9) here is a sample... Default.aspx: Default function Validate() { var x = document.form1.phone_no.value; if (isNaN(x) || x.indexOf( ) != -1) { alert(Enter numeric value); return false; } if (x.length > 10 || x.length > 8) { alert(enter 10 or 8 characters); return false; } if (x.charAt(0) != 9 || x.charAt(0) != 2) { alert(it should start with 9 or 2 ); return false } } Mobile validation Phone Number