IE11: clicking on primitive property throws a javascript execution error

[SachaFyson]

Describe the bug
In Internet Explorer (at least 11, did not test on other versions), clicking on a <table class="json-editor"> element that represents a primitive value (say, a string) throws a javascript execution error. This only seems to occur in view and form modes.

To Reproduce
Steps to reproduce the behavior:

1. Download project stackblitz example and serve it.
2. Open webpage in Internet Explorer.
3. Change editor mode to view.
4. Click on the far left of a primitive property, like randomNumber.

Expected behavior
An error should not be thrown in Internet Explorer when simply clicking on some element.

Desktop (please complete the following information):

• Browser: Internet Explorer

If you need more information, please tell me, because this is the first time I ever submit a ticket to GitHub.

[mariohmol]

sorry.. i dont have an IE11 to test