Same as title

Unicode art, grammar suggestions

See [MDN](https://developer.mozilla.org/en-US/docs/Glossary/CORS-safelisted_response_header) and [whatwg/fetch](whatwg/fetch#626).

The event type for `onerror()` is a vanilla `Event` that has no `message` property (or anything interesting about the error). Further info from this StackOverflow question: [Javascript doesn't catch error in WebSocket instantiation](https://stackoverflow.com/questions/31002592/javascript-doesnt-catch-error-in-websocket-instantiation/31003057#31003057).

http to https checked links

When teaching this subject I found that an example where you can see for which array the first and the second value in the [] after matrix stand, helps understanding better.

docs: remove eval polyfill.io

Update article.md

* Remove BigInt IE incompatibility partAs Internet Explorer was retired years ago, this paragraph is not needed anymore, so I deleted that line.* Delete link to MDN BigInt compatibility tableUnimportant link: almost total compatibility since the appearance of zhe `BigInt` type.

detail `Math.round` behavior on negative numbers in middle case.

Update article.md

Inappropriate code `run`

change example element of multidimensional array

Fixing a minor grammatical typo in the document.

The code uses the function named 'askPassword' but the text above it explaining the error reason says 'ask' instead of 'askPassword'

minor fix to function name written in explanation

Suggested edit - to make the phrase clearer.

the comment number is missing when the we mention line 2

Improve readability

Grammatical fix

Update article.md

Update article.md

better wording

Correction of grammatical error

Update article.md