'XRegExp' is undefined using ie11

Question

I'm using XRegExp for checking unicode regular expressions. It works without problem in any browser I have tested except in IE11.

In my script I define the regex to check as:

var unicodeWord = XRegExp("^[\\p{L}']...+$");

And in ie11 I get the following errors:

SCRIPT5009: 'Symbol' is undefined
xregexp.all.js (1730,11)
SCRIPT5009: 'XregExp' is undefined
jquery-3.3.1.slim.min.js (2,31232)

How can I solve this in ie11? I have checked and ie11 is not running in compatibility mode. As well I have read the documentation on xregexp.com but I can't see any way to solve this issue.

I will appreciate some guide to find the solution and if it's possible an explanation why ie11 behaves like that.

Answer 1

The error regarding Symbol is because the latest version of XRegExp uses Symbol which is not defined in IE11. An issue was raised about the problem. Your choices are:

1. Revert to an older version of XRegExp that does not use Symbol .

2. Install a polyfill for Symbol before loading XRegExp so that Symbol is present.

3. Wait for a newer release of XRegExp that is compiled with a polyfill. The fix has been merged but I don't see a release with this fix yet.

The error regarding XregExp just looks like a typo to me. The name is XRegExp , not XregExp .