how can i validate the real numbers using regular expressions in javascript

Question

Here is my code i have tried this but i didn't get the proper output. I want to give input like 10.00,100.00,1,000.00,10,000.00 How to validate this

<input type="text" name="depo_amt" id="depo_amt"  maxlength="70" placeholder="10.00"onclick="formatNumber()"/>`

function formatNumber()
        {
         var regex  = ^[0-9]\d{0,9}(\.\d{1,2})?%?$;

                if (depo_amount.value=='regex')
                          {
                              alert("Number is valid");
                               return false;
                         }
else
{
alert("Number is not valid");
}

}

no i have to validate from javascript statetments either this number is valid or not? if i enter any character it should say u entered wrong input — user3422452, Mar 28 '14 at 09:38
[Check this](http://stackoverflow.com/a/21984440/2260614).. It might help...!! — Bhavik, Mar 28 '14 at 09:40
if i give it ll get increment by one.. if the user goes to enter for 1lakh rupee he has to wait till it will 1,00,000 right?? how can the user wait that much time? — user3422452, Mar 28 '14 at 09:43
no, when u r going write some u ll write 100.00,1,000.00 right? — user3422452, Mar 28 '14 at 09:48

Lodewijk Bogaards · Answer 1 · 2014-03-28T09:58:24.230

2

this regex will do that for you

^[1-9]\d{0,2}(,\d{3})*\.\d{2}$

http://regex101.com/r/uY3fS5

edited Mar 28 '14 at 09:58

answered Mar 28 '14 at 09:37

Lodewijk Bogaards

19,777
3
28
52

Less convoluted than mine, does the same job. +1 from me :). – npinti Mar 28 '14 at 09:51

score 1 · Answer 2 · edited Mar 28 '14 at 10:01

1

this will work hopefully..

please check and tell if anyone finds any descipancy

^[1-9]\d{0,2}(?:,\d\d\d)*\.\d{2}$

http://regex101.com/r/dS1zZ0

edited Mar 28 '14 at 10:01

Lodewijk Bogaards

19,777
3
28
52

answered Mar 28 '14 at 09:40

aelor

10,892
3
32
48

yeah, I can see it now, haha – Lodewijk Bogaards Mar 28 '14 at 09:44
if i give input as xyz123 its taking i don't want that – user3422452 Mar 28 '14 at 12:39

how can i validate the real numbers using regular expressions in javascript

2 Answers2