Regular expression in javascript for accepting only numbers with a comma(,) or a dot(.)

Question

I'm looking for a regular expression for accepting only numbers and number with , or . characters. For example

12345--accepted
1.2344 accepted
1,2345 accepted
+123.34@@##sdsd--not accepted

I'm using this /^\d+$/ fot it does not allow , or . seperators

Possible duplicate of [Regular expression to match numbers with or without commas and decimals in text](https://stackoverflow.com/questions/5917082/regular-expression-to-match-numbers-with-or-without-commas-and-decimals-in-text) — Paul Abbott, Jun 23 '17 at 16:53
@YCF_L: I did not see the first number due to poor formatting. Besides, the title says "only numbers with , or . characters" — Wiktor Stribiżew, Jun 23 '17 at 17:00
Actually a number with a comma in it is not a valid number. If you're validating comma's as thousand separators, then this `1,2345` is not valid. — , Jun 23 '17 at 17:38
This is closer to what's needed `^(?:\d+(?:,\d{3})*(?:\.\d*)?|\.\d+)$` — , Jun 23 '17 at 17:45

Youcef LAIDANI · Answer 1 · 2017-06-23T17:15:31.467

1

You can use this regex ^\d+([.,]\d+)?$:

regex demo

var array = ["12345", "1.2344", "1,2345", "+123.34@@##sdsd"];
for (var i = 0; i < array.length; i++) {
    let regex = /^\d+([.,]\d+)?$/g; 
    var patt = new RegExp(regex);
    console.log(patt.test(array[i]))
}

edited Jun 23 '17 at 17:15

answered Jun 23 '17 at 16:57

Youcef LAIDANI

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hi, can you take look at my question? https://stackoverflow.com/questions/44726427/replace-apostrophe-in-the-middle-of-the-word-with-in-java – vaibhavcool20 Jun 23 '17 at 17:04
const regPrc = /^\d+([.,]\d+)?$; this is returning me an error that the regular is unterminated – RamAlx Jun 23 '17 at 17:06
Guys i'm doing something terribly wrong. I'm writing: const reqPrice = /^\d+([.,]\d+)?$/g; and then if (!reqPrice.test(price)) { errors.price = 'Price can contain only numbers!!!'; } and it does not triggered. What am i doing wrong? – RamAlx Jun 23 '17 at 17:26
@user7334203 i'm not so familiar with javascript can you try this `const reqPrice = /^\d+([.,]\d+)?$/g; if (reqPrice.test('12345')) { console.log('Correct'); } else{ console.log('Not correct'); }` i think you miss the else statement – Youcef LAIDANI Jun 23 '17 at 17:31
@YCF_L Ah ok, I won't tell anyone. – vaibhavcool20 Jun 23 '17 at 17:32

Regular expression in javascript for accepting only numbers with a comma(,) or a dot(.)

1 Answers1