How to validate user input for mobile number using Regular Expression in Javascript

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The below Html code explains the client side validation for mobile number using Regular Expressions.

<%@ Page Language=”C#” AutoEventWireup=”true” CodeFile=”Default.aspx.cs” Inherits=”_Default” %>

<!DOCTYPE html PUBLIC “-//W3C//DTD XHTML 1.0 Transitional//EN” “http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd”>

<html xmlns=”http://www.w3.org/1999/xhtml”>

<head runat=”server”>

<title>Untitled Page</title>

<script language=”ecmascript” type=”text/ecmascript”>

function validateMobileNo() {

var p1 = /^([0-9]{10})$/;

var mobile_no = form1.Text1.value;

var x1 = mobile_no.match(p1);

if (x1 == null) {

alert(“Invalid User Input”);

return false;

}

return true;

}

</script>

</head><body>

<form id=”form1″ runat=”server”>

<div>

Enter Mobile Number:

<input id=”Text1″ name=”txt1″ type=”text” /><br />

<br />

<asp:Button ID=”Button2″ OnClientClick =”return validateMobileNo();” Text=”MobileNoCheck” runat=”server” />

</div>

</form>

</body>

</html>

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About Bijay Kumar

I am Bijay from Odisha, India. Currently working in my own venture TSInfo Technologies in Bangalore, India. I am Microsoft Office Servers and Services (SharePoint) MVP (5 times). I works in SharePoint 2016/2013/2010, SharePoint Online Office 365 etc. Check out My MVP Profile.. I also run popular SharePoint web site SharePointSky.com

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