Note:

Question

151

Javascript Regex For only numbers and no white spaces

rated 0 times [ 158] [ 7] / answers: 1 / hits: 18914 / 8 Years ago, sun, april 3, 2016, 12:00:00

I was very surprised that I didn't find this already on the internet.
is there's a regular expression that validates only digits in a string including those starting with 0 and not white spaces

here's the example I'm using

  function ValidateNumber() {



  var regExp = new RegExp(/^d+$/);

  var strNumber = 010099914934;

  var isValid = regExp.test(strNumber);

  return isValid;

}

but still the isValid value is set to false

Answers

Only authorized users can answer the question. Please sign in first, or register a free account.

helenat

Add To Favorites

Follow

Total Points: 450

Total Questions: 95

Total Answers: 97

Location: Central African Republic

Member since Mon, Aug 10, 2020

4 Years ago

answered 8 Years ago margaritakristinak · Accepted Answer

You could use /^d+$/.

That means:

^ string start

d+ a digit, once or more times

$ string end

This way you force the match to only numbers from start to end of that string.

Example here: https://regex101.com/r/jP4sN1/1

jsFiddle here: https://jsfiddle.net/gvqzknwk/

Note:

If you are using the RegExp constructor you need to double escape the in the d selector, so your string passed to the RegExp constructor must be "^\d+$".

So your function could be:

function ValidateNumber(strNumber) {

    var regExp = new RegExp("^\d+$");

    var isValid = regExp.test(strNumber); // or just: /^d+$/.test(strNumber);

    return isValid;

}