Martin

[RegExp] Lookbehind assertion

4

Does core-js provide a way to polyfill the RegExp feature *Lookbehind assertion* not available in IE11? This example uses look-behind and works in Chrome but not in IE11 (as is...

`` elements in IE11 ignore `dispaly: flex;` and instead render their children as plain old table cell elements. live demo [JSBin](https://jsbin.com/dadutuvuwo/edit?html,output) showing the issue (when opened in IE11) In Chrome...

What to do if my setup code is larger than allowed?

1

I wanted to benchmark all proposed solutions for [pretty printing xml with javascript](https://stackoverflow.com/questions/376373/pretty-printing-xml-with-javascript); which results in quite a large "Setup JavaScript" field. So what can I do to be able...

[Select] moving focus with keyboard ArrowUp or ArrowDown is not working when [disablePortal] is set

5

### Duplicates - [X] I have searched the existing issues ### Latest version - [X] I have tested the latest version ### Current behavior 😯 When I click into a...

misleading wording in stopPropagation (i.e. only affecting the current phase)

3

**Describe the bug** The explanation text for `stopPropagation` in the left sidebar Legend states that it affects the current event phase. (I understand that statement meaning: `stopPropagation` during CAPTURING would...

Date Picker popup doesn't propagate shadow DOM events into the light DOM

2

### What is the issue with the HTML Standard? It seems the [`input type="date"` standard](https://html.spec.whatwg.org/multipage/input.html#date-state-(type=date)) does not specify whether or not any DOM events (`click`, `keydown`, etc) originating in the...