Characters Only allow in a TextBox JavaScript

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XML

<script language="Javascript">
function AllowAlphabet(e)
{
document.getElementById("div_name").innerHTML="";
    document.getElementById("div_name").style.display="none";

  isIE = document.all ? 1 : 0
  keyEntry = !isIE ? e.which : event.keyCode;
  if (((keyEntry >= '65') && (keyEntry <= '90')) || ((keyEntry >= '97') && (keyEntry <= '122')) || (keyEntry == '46') || (keyEntry == '32') || keyEntry == '45')
     return true;
  else
{
   document.getElementById("div_name").innerHTML="<B>Enter only Characters</B>";
            document.getElementById("div_name").style.display="block";

    return false;
      }
}
</script

>
c# code:

C#

using System;
using System.Collections;
using System.Configuration;
using System.Data;
using System.Linq;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Xml.Linq;

public partial class FO_MASTER : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        txt_FieldOfficerName.Attributes.Add("onkeypress", "AllowAlphabet(e)");
}
    }

anybody solution me,please hlep me

Posted 16-Jun-13 21:55pm

Member 9959371

Updated 17-Jun-13 0:32am

v3

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5 solutions

Solution 1

Use this regex code :
"onlyLetterNumber": {
"regex": /^[0-9a-zA-Z]+$/,
"alertText": "* No special characters allowed"
},

Thanks
prince Sharma

Posted 16-Jun-13 22:12pm

nawabprince

Comments

Member 9959371 17-Jun-13 4:14am

I don'not know above code ,,plz send me correct code

Solution 2

Posted 17-Jun-13 21:56pm

nawabprince

Solution 3

<html>
<head>
<script type="text/javascript">
function charOnly()
{
var strtext=document.getElementById("textbox").value;
var index=strtext.length;
for(var i=0;i<index;i++)
{
var asciiValue=strtext.charCodeAt(i);
if(asciiValue>=65&&asciiValue<=90 || asciiValue>=97 && asciiValue<=122)
{
alert("Char is entered");
}
else
{
alert("invalid data is entered");
}
}
}

</script>
</head>
<body>
Enter any value:<input type="text" id="textbox"/>
<button onClick="charOnly()">Check For Valid Characters</button>
</body>
</html>

Posted 18-Jun-13 2:08am

gagandeep.pratihar

Solution 5

You need to filter the input while user is entering it. You can use this framework for this. It already has these functionality built in you just need to see how it can be used to achieve this functionality.

A Tiny Javascript Framework for Common Validation Scenarios.[^]

Posted 18-Jun-13 2:26am

Rahul Rajat Singh

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**VICK** · Accepted Answer · 2013-06-18T02:22:00

Solution 4

Why to stick wid JavaScript???

have a look at the following...

http://www.asp.net/ajaxLibrary/AjaxControlToolkitSampleSite/FilteredTextBox/FilteredTextBox.aspx[^]

Hope you gonna like it...

:)

Posted 18-Jun-13 2:22am

VICK

Comments

VICK 18-Jun-13 8:51am

Thanks for Accepting it as answer... :)