JavaScript: Check if a string has white space

Question

Hello all,

I am trying to check if a string has white space. I found this function but it doesn't seemt o be working:

 function hasWhiteSpace(s) {

  reWhiteSpace = new RegExp("/^\s+$/");
  // Check for white space
  if (reWhiteSpace.test(s)) {
  //alert("Please Check Your Fields For Spaces");
  return false;
  }
  return true;
 }

Btw, I added quotes to RegExp.

Is there something wrong? Is there anything better that I can use? Hopefully JQuery.

Thanks for any help.

Answer 1

You can simply use the indexOf method on the input string:

function hasWhiteSpace(s) {
  return s.indexOf(' ') >= 0;
}

Or you can use the test method, on a simple RegEx:

function hasWhiteSpace(s) {
  return /\s/g.test(s);
}

This will also check for other white space characters like Tab.

Answer 2

your logic is backwards, true means false.