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regex for numbers any only one decimal

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Jan 14.2020

function isNumberKey(evt)
{
var charCode = (evt.which) ? evt.which : evt.keyCode;
if (charCode != 46 && charCode > 31
&& (charCode < 48 || charCode > 57))
return false;
return true;
}
this work well for numbers but it allows more then 1 decimal. i just one this to allow only one decimal. any help plz

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JavaScript

3 Comments(s) ↴

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@SempervivumJan 14.2020 — This checks only the character currently being input. I guess you have applied this to an input field where you want to allow the user only one digit?
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@NogDogJan 14.2020 — "^[0-9]*(.[0-9]+)?$" perhaps?
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@HarshShahJan 29.2020 — I try this code this can be work.

You must try it.

^(d+)?([.]?d{0,2})?$
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