Javascript validation only for integer.No Alphabets are allowed

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Hi Everyone,

I have done

C#

var regExpForInteger = /^[0-9\s]*$/;
           if ($('#totalRowsTextBox').val() < 0 && (!regExpForInteger.test($('#totalRowsTextBox').val()))) {
               alert("Total Rows Column value must be greater than Zero.Only Numbers are Allowed  ");
               return false;
           }
             return True;

But if i put any alphabets ,validation does not work .Please guide me.
I want to allow only integer in my textbox .Alphabets are not allowed.

Thanks in Advance
HArshal

Posted 29-Jul-14 4:40am

R Harshal

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3 solutions

Solution 2

I am sure you heard about JavaScript isNaN() Function[^]

JavaScript

var f = isNaN($('#totalRowsTextBox').val());

Good luck

Posted 29-Jul-14 4:57am

Raje_

Solution 1

Hi there, you can see this link[^].

Also you can see this link[^].

Posted 29-Jul-14 4:47am

Christian Amado

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Peter Leow · Accepted Answer · 2014-07-29T04:59:00

Solution 3

value < 0 and value not a digit can never happen together, so change the && to ||
You regex also accept space \s, it that what you want?

Posted 29-Jul-14 4:59am

Peter Leow

Comments

R Harshal 29-Jul-14 11:14am

Thank You peter .
I made a mistake ..
Thanks for your help.

Peter Leow 29-Jul-14 11:27am

You are welcome.

Peter Leow 30-Jul-14 20:29pm

What about decimal and negative number?

[no name] 30-Jul-14 1:15am

Its better to use isNaN method right?