The task asks to multiply numeric object 'properties', however the term 'object properties' include both the 'property keys' of the object as well as the 'property values' of the object. It is clear the intention of the task is to change property values. 
This change improves clarity of the task description.

The current link is redirected to the parent chapter.
This fix is in sync with
https://javascript.info/operators#bitwise-operators and #2117

Currently, syntax of the 1 and 3 cases is the same.

Fix syntax enumeration in 1.4.7

minor change

1.4.1.8_multiply numeric - Update 'properties' to 'property values'

correct minor typo

Fix wrong variables names.

Fix link in 1.2.18

Update README.md

improved doc

As promised.

1. Without a real sorting part, the data output is not the same as with real sort (as the array is not really sorted when the callback returns `undefined`).
2. Current example may somehow encourage a reader to write sorting callbacks with undetermined behavior.

As of the last versions of V8 (i.e. Chrome and Node.js), the current info seems outdated.

See also https://v8.dev/blog/array-sort

The page of the current link has not this anchor anymore.

Fix typo in 1.11.6 (Promisification)

Fix Optional chaining doc

Fix typo, add note in 1.12.2 (Async iteration)

…section

Change `var` to `let` in 7.16 regexp-sticky

Correct comment in 1.13.1

Fix typos in 'Proxy and Reflect'

Fix outdated note in 1.99.04 (Reference Type)

Correct solution explanation in 1.99.04 (Reference Type)

Fix link in 2.1.5 (Node properties...)

It can be more readable with same line of code. There was a lot of nested parenthesis.

Refs: javascript-tutorial/en.javascript.info#2252 (comment)

Fix a typo in 1.11.3 (Promises chaining)

Fix typo in 2.1.6 (Attributes and properties)

look like ninja code

fix typo in 06-promisify article.md

Fix typos in 2.1.4 (Searching elements)

FIX: delete extra space

Fix a typo in 1.6.1 task solution

Fix a possible typo in 1.6.1

OPT: change "false" to "falsy"

FIX: change ; to ,