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alert is called on the page https://javascript.info/cross-window-communication and because of the that, I am not able to access the content of that page. ![Image](https://github.com/user-attachments/assets/8c1f99a4-1fed-43ba-84b4-83c5120810f7)

In the chapter "Class basic syntax", in the second example of "what is a class" section, on line 15 of the code it is written in the comment that "there...

The documentation has been synchronized with MDN These changes might seem insignificant, but they will reduce confusion for developers reading this documentation For the methods `append`, `prepend`, `before`, `after`, and...

review needed

added another solution that worked for me

review needed

Corrected the sentence

review needed

# The Issue The current article [states](https://javascript.info/polyfills#polyfills) that: > Two interesting polyfill libraries are: > - [core js](https://github.com/zloirock/core-js) that supports a lot, allows to include only needed features. # Suggested...

review needed

Removed the "recently added" marking for the static methods Promise.allSettled and Promise.any, as - according to MDN - they are available across browsers since 2020 (all listed browsers support them)....

review needed

Polyfill section mentions two libraries, but only one listed. Related to removal in #3712. https://github.com/javascript-tutorial/en.javascript.info/blob/master/1-js/03-code-quality/06-polyfills/article.md?plain=1#L74