No normalization of add/remove/toggle in IE10 and IE11

[PatrickEickmeier]

I tested the polyfill in IE10 and IE11 (Win7 on a virtual machine) and the functions still have partial support of classList. Multiple parameters in the add() and remove() functions still don't work.

    if (!("classList" in document.createElement("_"))
        || document.createElementNS && !("classList" in document.createElementNS("http://www.w3.org/2000/svg", "g"))) {

The last condition !("classList" in document.createElementNS("http://www.w3.org/2000/svg", "g")) evaluates to true, so the part for no classlist support will be executed.
The part for partial classlist supported browsers won't be executed in IE10/11.

I could "fix" the issue by changing || to && in line18/19:

    if (!("classList" in document.createElement("_"))
        && document.createElementNS && !("classList" in document.createElementNS("http://www.w3.org/2000/svg", "g"))) {

It seems to work for IE10/11, but don't know if is could be an issue for other browsers.

[Rendez]

+1 having the same issue here.

[dgraham]

This regression was introduced by 6379aea in #40.

[Tokimon]

+1 on this. Having the same issue.

[stevenvachon]

@eligrey hello?

[tremby]

The suggested fix here breaks SVG support in IE11.

[glen-cheney]

@tbranyen would you mind publishing and older version of this package on npm? Right now the only release on npm contains this bug. You could check out the 2014-12-13 tag and publish it as 1.1.20141213, which won't break semver. Here's an example in a stackoverflow answer you can follow to publish an older version.

[drgullin]

What about simplification? We may just use:

if (!("classList" in document.createElement("_"))) {

So the normalization would also work as expected.

[tremby]

Does that detect also whether support exists for SVG elements?

[stevenvachon]

@eligrey are you deceased?

[stevenvachon]

@PatAtMacadamian comments?