Error in IE 11 - Expected identifier about url-search-params-polyfill

[Soenhay]

This link appears to be related:

https://arstechnica.com/civis/viewtopic.php?t=185317

[Soenhay]

Changing
prototype.delete
to
prototype['delete']

And changing
this.delete (keys[i]);
to
this['delete'](keys[i]);

Removes the error but further testing is needed to see if it is an actual fix.

[jerrybendy]

I just tested on my IE 11.1480.14393.0, and everything worked well. The link you gave me is about IE and extending HTML elements.

Although delete is a key word in javascript, but using delete as an object's property is allowed.

Such as:

// They are allowed 
var Obj = function() {}
Obj.delete = function() {}
Obj.prototype.delete = function() {}

[Herst]

According to http://kangax.github.io/compat-table/es5/#test-Object/array_literal_extensions_Reserved_words_as_property_names IE11 ought to support reserved keywords as properties quite well. This is not the case for IE8, are you sure you weren't in the IE8 rendering mode @Soenhay?

[Soenhay]

"Display Intranet Sites in Compatibiliy View" was checked but I am not currently able to reproduce the issue so checking or unchecking it does not appear to change anything.

Changing it to "this['delete']" was not really any use either since calling delete would not work.

I just realized that it is still not working.

[Soenhay]

It is actually still not working. I was testing with the modified file earlier.

Also, I am loading the page that calls the library into an iFrame.

[Soenhay]

In relation to this link: https://docs.microsoft.com/en-us/internet-explorer/ie11-deploy-guide/fix-compat-issues-with-doc-modes-and-enterprise-mode-site-list

The default document mode on my page in IE11 is 5. If I change it to 8,9 or 10 in the emulation tab then the "Expected identifier" error in index.js goes away and a new error in an unrelated script occurs. So unless I am mistaken it would appear that it is running in an older rendering mode as Herst suggested.

Closing again.

[Herst]

IE5?! Were you missing a proper DOCTYPE?

[Soenhay]

It is a legacy website :) where I can not change the DOCTYPE. Our custom page is in an iFrame and I found that I do not really need the library on that particular site so I am no longer trying to load it there. I am using it for some older versions of Safari on iPads and iPhones and it is working great.