text: function is_float(mixed_var) {
    //  discuss at: http://phpjs.org/functions/is_float/
    // original by: Paulo Freitas
    // bugfixed by: Brett Zamir (http://brett-zamir.me)
    // improved by: WebDevHobo (http://webdevhobo.blogspot.com/)
    // improved by: Rafał Kukawski (http://blog.kukawski.pl)
    //        note: 1.0 is simplified to 1 before it can be accessed by the function, this makes
    //        note: it different from the PHP implementation. We can't fix this unfortunately.
    //   example 1: is_float(186.31);
    //   returns 1: true
  
    return +mixed_var === mixed_var && (!isFinite(mixed_var) || !!(mixed_var % 1));
  }