IE8 - Object doesn't support this property or method

[phillipsnick]

I'm building an incompatible browser message using this library, but I can't get IE8 to work with the isUnsupportedBrowser method due to what seems to be an issue inside compareVersions.

Browser is IE 8.0.7600.16385

Line 465-468 is

return map(version.split("."), function (chunk) {
  return new Array(20 - chunk.length).join("0") + chunk;
}).reverse();

My test code can be found here: http://lsconnect.co.uk/ie/

Which is simply

if (bowser.isUnsupportedBrowser({
    msie: '10.0',
    firefox: '46',
    chrome: '50',
    safari: '8.1',
    opera: '38'
})) {
  alert('Unsupported');
} else {
  alert('Supported');
}

I have tried to debug the code but haven't made much progress with the exact cause.

[maksimr]

Problem in function map

  function map(arr, iterator) {
    var result = [], i;
    if (Array.prototype.map) {
      return Array.prototype.map.call(arr, iterator);
    }
    for (i = 0; i < arr.length; i++) {
      result = iterator(arr[i]); // WE SHOULD PUSH RESULT OF ITERATOR TO VARIABLE result 
    }
    return result;
  }

Correct code:

  function map(arr, iterator) {
    var result = [], i;
    if (Array.prototype.map) {
      return Array.prototype.map.call(arr, iterator);
    }
    for (i = 0; i < arr.length; i++) {
      result.push(iterator(arr[i]));
    }
    return result;
  }

[phillipsnick]

Works perfectly!

[lancedikson]

Yeah, thank you @phillipsnick and @maksimr. The patch will be released today or maybe tomorrow.