Why is angular.isNumber() not working as expected?

Question

It appears as if AngularJS\'s angular.isNumber is not working. It doesn\'t work with strings that are numbers. Am I doing something wrong? Should I just use

Answer 1

I was working on the same problem and I was trying to work around that edge case. So I created a slightly different approach.

FIDDLE

function isStringNumber(str) {
  var parsed = parseFloat(str);
  var casted = +str;
  return parsed === casted  && !isNaN(parsed) && !isNaN(casted);
}