How to validate negative, float numbers in parsley validation

Question

I have a select box which option contain Negative numbers, floar numbers. How do i validate that in parsely.

<select class="form-control"  data-parsley-pattern="^[0-9]*\.[0-9]{2}$" id="duration"  name="duration">
    <option value="-1" >Not Strated</option>
    <option value="0" >Just Strated</option>
    <option value="1.6" >1.6 % Done</option>
    <option value="2">2 % Done</option>
    <option value="2.6">2.6 % Done</option>
    <option value="3">3 % Done</option>
    <option value="3.6">3.6 % Done</option>
    <option value="4">4 % Done</option>
    <option value="4.6">4.6 % Done</option>
    <option value="5">5 % Done</option>
   //And So on...
</select>

I have tried some of solution on SO but it didn't work.

data-parsley-pattern="^[0-9]*\.[0-9]{2}$"

The Solution Which i found to validate negative and float numbers in parsley is.

^-?[0-9]\d*(\.\d+)?$

I have never heard of parsley. But your regex seems to force two trailing digits. And none of your numbers have that. Try this and see if it works for you. https://regex101.com/r/i5qt3m/1 `^[-0-9]*\.?[0-9]$` — Andreas, Jul 15 '17 at 06:51
@Andreas Sir you can add your suggestion to the answer, it is working. Thanks. — always-a-learner, Jul 15 '17 at 07:06
Made some changes to it and added answer. Not sure which works best for you. I believe they are quite equal. — Andreas, Jul 15 '17 at 07:10
@Andreas it is validating negetive number. can you please help to validate negative number — always-a-learner, Jul 15 '17 at 07:19

Andreas · Accepted Answer · 2017-07-15T08:25:21.400

2

Your pattern was missing a few parts.
It did not capture negative numbers so I added a - in the first "group".
I added ? To make the float part not optional.
I moved . To the [ ] and added * to make zero or more possible.

^[-0-9]+?[\.0-9]*$

https://regex101.com/r/i5qt3m/2

OP found the answer: ^-?[0-9]\d*(\.\d+)?$

edited Jul 15 '17 at 08:25

answered Jul 15 '17 at 07:09

Andreas

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sir, it is validating only float number not the negative one. – always-a-learner Jul 15 '17 at 07:17
I can't find any documentation of how parsley regex work. But I found an example where - was escaped with `\-` don't know if that is the problem or what. @always – Andreas Jul 15 '17 at 07:29
I had found it here. [SO question](https://stackoverflow.com/questions/15814592/how-do-i-include-negative-decimal-numbers-in-this-regular-expression) – always-a-learner Jul 15 '17 at 07:38
@always ahh. So question mark is supposed to be after. I see. I will delete my answer when you have read this. – Andreas Jul 15 '17 at 08:07
Don't delete it sir. just add the regex in your answer. – always-a-learner Jul 15 '17 at 08:09

How to validate negative, float numbers in parsley validation

1 Answers1