IE compatibility issue

[sh20000sh]

I actually didn't cared about "done, but with errors on page" displayed on corner of browser, as IE was always like that even during their days as I remembered. And most of I expected from using YT2009 are worked anyway. I saw what those actually are, seems like most of those are related with "readyState". And the other one looks like issue with search-suggestion.js that you said won't fix in #305. Is it possible to just ignore that code when request is from IE?

Webpage error details

User Agent: Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; WOW64; Trident/4.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; .NET4.0C; .NET4.0E)
Timestamp: Thu, 30 Apr 2026 08:44:56 UTC

Message: Object doesn't support this property or method
Line: 20
Char: 1
Code: 0
URI: ~/assets/site-assets/search-suggestions.js

Message: 'readyState' is null or not an object
Line: 16
Char: 5
Code: 0
URI: ~/assets/site-assets/notifications.js

Message: 'readyState' is null or not an object
Line: 16
Char: 5
Code: 0
URI: ~/assets/site-assets/notifications.js

Message: Object doesn't support this property or method
Line: 38
Char: 9
Code: 0
URI: ~/assets/site-assets/notifications.js

Message: 'readyState' is null or not an object
Line: 86
Char: 13
Code: 0
URI: ~/assets/site-assets/homepage-recommended.js

Message: 'readyState' is null or not an object
Line: 86
Char: 13
Code: 0
URI: ~/assets/site-assets/homepage-recommended.js

[sh20000sh]

For Object doesn't support this property or method, I just removed lines causes following error, considering those were not implemented for IE. And for 'readyState' is null or not an object, I removed conditions other than this.readyState. After then browser said errors are gone, but I don't know consequences this will cause.

[sh20000sh]

Inspected various pages, most of those error were like those. One of exceptional case was Object expected caused by line use_ryd_first_video(); on channelpage for some reason.

And code related with readyState seems located at literally everywhere, looks like this is something that won't be fixed I guess :/
Found those were also there for compatibility older versions for IE, and now making error at IE8. What a mess.

[sh20000sh]

Inspected readystate code bit deeper, found this.readyState would work for modern browser and r.readyState is there for IE6 compatibility. And having both of them at same line doesn't display error message on either of IE6 or IE8. What was purpose for e.readyState exists at that line?

[sh20000sh]

Looks like some weird edge case, but video having # in its title causes something in line seekbarRemoveWidth = 265;adjustSeekbarWidth(); in yt2009html.js. More likely leftover HTML5 code that won't work on fmode (or something other than default player) I guess.

[ftde0]

e.readyState code may have been placed in an attempt to figure out requests not going through in IE, left and copied and pasted ever since then, nothing high priority as it still works but may be removed at one point if deemed safe

[sh20000sh]

From inspection, Object expected looks mostly like be leftover code for default player when not using those I think.

[sh20000sh]

Inspected various pages, most of those error were like those. One of exceptional case was Object expected caused by line use_ryd_first_video(); on channelpage for some reason.

In latest version, its code looked like this:

        code = code.replace(`<!--yt2009_ryd_set-->`, `
        <script>
            use_ryd = true;
            use_ryd_first_video();
        </script>`)

Does it supposed to run without any condition?

[ftde0]

i actually had a look at this issue in general as well, e.readyState can be removed, one error basically always happens because the search suggestions JS breaks. and this

        <script>
            use_ryd = true;
            use_ryd_first_video();
        </script>

does have an effect on HTML5, but wasn't properly implemented on flash.

all these are set to have improvements next update

[sh20000sh]

one error basically always happens because the search suggestions JS breaks.

Also sometimes happened with notifications.js during normal use. As I mainly using YT2009 in IE, I just backup those two and put empty JS files on site-assets folder.

[sh20000sh]

Also sometimes happened with notifications.js during normal use.

Checked with latest version, found this is happening passively like search suggestion JS after log in with actual youtube account. I think it's safe to close this issue after dealing with that one.