javascript validation for enter only four number

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hi

to all,

i need a validation to my textbox, that accept only four integer. if user enter only two number or more than four it would say wrong number enter.

so if use enter four number it accept.

If user enter three number and one space than also it would raise message wrong number enter..

thanks!

Posted 17-Apr-12 3:40am

balongi

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3 solutions

Solution 2

try this link

http://bytes.com/topic/javascript/answers/90985-validate-form-4-digit-integer[^]

you can also use this code and add only one or 2 line of code according to you requiremnest

XML

<script type ="text/javascript">
    function MaskMoney(evt)
    {
    if (!(evt.keyCode == 46 || (evt.keyCode >= 48 && evt.keyCode <= 57))) return false;
    var parts = evt.srcElement.value.split('.');
    if (parts.length > 4) return false;
    if (evt.keyCode == 46) return (parts.length == 1);
    if (parts[0].length >= 14) return false;
    if (parts.length == 4 && parts[1].length >= 4) return false;
    }
    </script>


In aspx.cs page
-----------------

 protected void Page_Load(object sender, EventArgs e)
        {
            TextBox1.Attributes.Add("onKeydown", "return MaskMoney(event)");
        }

Posted 17-Apr-12 4:20am

gqadirshabbir

Updated 17-Apr-12 4:24am

v2

Solution 3

You can use \s*[0-9]\s*[0-9]\s*[0-9]\s*[0-9]\s* expression for allow spaces.

Posted 24-Apr-12 0:39am

ksvinothmca

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ksvinothmca · Accepted Answer · 2012-04-17T03:45:00

Solution 1

Use this validation using regex.

[0-9][0-9][0-9][0-9]

Posted 17-Apr-12 3:45am

ksvinothmca

Comments

balongi 17-Apr-12 10:26am

if user add number with space than also it acceptable. can you modify according to that. means four number and many space will acceptable

[no name] 24-Apr-12 3:32am

Hi,
sorry for late reply.
You can use \s*[0-9]\s*[0-9]\s*[0-9]\s*[0-9]\s* expression for allow spaces.