Merge branch 'main' into aligndatatypes

files/en-us/_redirects.txt

@@ -12791,6 +12791,7 @@
 /en-US/docs/Web/JavaScript/Guide/Inheritance_Revisited	/en-US/docs/Web/JavaScript/Inheritance_and_the_prototype_chain
 /en-US/docs/Web/JavaScript/Guide/Inheritance_and_the_prototype_chain	/en-US/docs/Web/JavaScript/Inheritance_and_the_prototype_chain
 /en-US/docs/Web/JavaScript/Guide/JavaScript_Overview	/en-US/docs/Web/JavaScript/Guide/Introduction
+/en-US/docs/Web/JavaScript/Guide/Numbers_and_dates	/en-US/docs/Web/JavaScript/Guide/Numbers_and_strings
 /en-US/docs/Web/JavaScript/Guide/Obsolete_Pages	/en-US/docs/Web/JavaScript/Guide
 /en-US/docs/Web/JavaScript/Guide/Obsolete_Pages/Block_Statement	/en-US/docs/Web/JavaScript/Guide/Control_flow_and_error_handling
 /en-US/docs/Web/JavaScript/Guide/Obsolete_Pages/Calling_Functions	/en-US/docs/Web/JavaScript/Guide/Functions
@@ -12876,6 +12877,7 @@
 /en-US/docs/Web/JavaScript/Guide/Regular_expressions/Unicode_property_escapes	/en-US/docs/Web/JavaScript/Reference/Regular_expressions/Unicode_character_class_escape
 /en-US/docs/Web/JavaScript/Guide/Sameness	/en-US/docs/Web/JavaScript/Equality_comparisons_and_sameness
 /en-US/docs/Web/JavaScript/Guide/Statements	/en-US/docs/Web/JavaScript/Guide/Control_flow_and_error_handling
+/en-US/docs/Web/JavaScript/Guide/Text_formatting	/en-US/docs/Web/JavaScript/Guide/Numbers_and_strings
 /en-US/docs/Web/JavaScript/Guide/The_Iterator_protocol	/en-US/docs/Web/JavaScript/Reference/Iteration_protocols
 /en-US/docs/Web/JavaScript/Guide/The_legacy_Iterator_protocol	/en-US/docs/Web/JavaScript/Reference/Deprecated_and_obsolete_features
 /en-US/docs/Web/JavaScript/Guide/Using_native_JSON	/en-US/docs/Web/JavaScript/Reference/Global_Objects/JSON

files/en-us/_wikihistory.json

@@ -102176,7 +102176,7 @@
       "douglasnaphas"
     ]
   },
-  "Web/JavaScript/Guide/Numbers_and_dates": {
+  "Web/JavaScript/Guide/Numbers_and_strings": {
     "modified": "2020-11-14T07:27:01.088Z",
     "contributors": [
       "mfuji09",
@@ -102422,31 +102422,6 @@
       "jpmedley"
     ]
   },
-  "Web/JavaScript/Guide/Text_formatting": {
-    "modified": "2020-05-25T10:48:56.137Z",
-    "contributors": [
-      "fscholz",
-      "wbamberg",
-      "bma",
-      "alattalatta",
-      "vriojtg",
-      "sbfraser01",
-      "chrisdavidmills",
-      "JigneshMistry",
-      "stephaniehobson",
-      "SphinxKnight",
-      "amir77ameri",
-      "ThomasEugeneBishop",
-      "nmve",
-      "kdex",
-      "Jeremie",
-      "danielinux7",
-      "gportioli",
-      "xfq",
-      "mahzaib",
-      "kscarfone"
-    ]
-  },
   "Web/JavaScript/Guide/Typed_arrays": {
     "modified": "2020-10-15T21:04:01.905Z",
     "contributors": [

files/en-us/games/techniques/tilemaps/square_tilemaps_implementation_colon__scrolling_maps/index.md

@@ -19,7 +19,7 @@ Regardless of the type of camera, we would always need information regarding its
 
 - `x` and `y`: The current position of the camera. In this implementation, we are assuming that `(x,y)` points to the top left corner of visible portion of the map.
 - `width` and `height`: The size of the camera's viewport.
-- `maxX` and `maxY`: The limit for the camera's position — The lower limit will nearly always be (0,0), and in this case the upper limit is equal to the size of the world minus the size of the camera's viewport.
+- `maxX` and `maxY`: The limit for the camera's position — The lower limit will nearly always be `(0,0)`, and in this case the upper limit is equal to the size of the world minus the size of the camera's viewport.
 
 ## Rendering the map
 

files/en-us/games/tutorials/html5_gamedev_phaser_device_orientation/index.md

@@ -28,7 +28,7 @@ You can open the index file in your favorite browser to launch the game and try
 
 - `img`: All the images that we will use in the game.
 - `src`: The JavaScript files with all the source code of the game defined inside.
-- `audio:` The sound files used in the game.
+- `audio`: The sound files used in the game.
 
 ## Setting up the Canvas
 

files/en-us/glossary/guaranteed_invalid_value/index.md

@@ -0,0 +1,17 @@
+---
+title: Guaranteed-invalid value
+slug: Glossary/guaranteed_invalid_value
+page-type: glossary-definition
+---
+
+{{GlossarySidebar}}
+
+In CSS the guaranteed-invalid value is {{CSSXref("initial")}}.
+
+When a [custom property](/en-US/docs/Web/CSS/--*)'s value is the guaranteed-invalid value, the {{CSSXref("var")}} function cannot use it for substitution. Attempting to do so makes the declaration _invalid at computed-value time_, unless a valid fallback is specified.
+
+## See also
+
+- CSS {{CSSXref("initial")}}
+- CSS {{CSSXref("var")}}
+- [CSS Custom Properties for Cascading Variables Module Level 1 Specification](https://www.w3.org/TR/css-variables-1/#guaranteed-invalid)

files/en-us/learn_web_development/core/scripting/math/index.md

@@ -456,7 +456,7 @@ In the next article, we'll explore text and how JavaScript allows us to manipula
 
 ## See also
 
-- [Numbers and dates](/en-US/docs/Web/JavaScript/Guide/Numbers_and_dates)
+- [Numbers and strings](/en-US/docs/Web/JavaScript/Guide/Numbers_and_strings)
 - [Expressions and operators](/en-US/docs/Web/JavaScript/Guide/Expressions_and_operators)
 
 {{PreviousMenuNext("Learn_web_development/Core/Scripting/Variables", "Learn_web_development/Core/Scripting/Strings", "Learn_web_development/Core/Scripting")}}

files/en-us/web/api/pushsubscription/index.md

@@ -71,7 +71,7 @@ const subscriptionObject = {
 // Stringify the object an post to the app server
 fetch(`https://example.com/push/`, {
   method: "post",
-  body: JSON.stringify(pushSubscription);
+  body: JSON.stringify(subscriptionObject);
 });
 ```
 

files/en-us/web/api/selection/anchoroffset/index.md

@@ -10,7 +10,9 @@ browser-compat: api.Selection.anchorOffset
 
 The **`Selection.anchorOffset`** read-only property returns the
 number of characters that the selection's anchor is offset within the
-{{domxref("Selection.anchorNode")}}.
+{{domxref("Selection.anchorNode")}} if said node is of type {{domxref("Text")}}, {{domxref("CDATASection")}} or {{domxref("Comment")}}.
+
+In the case of {{domxref("Selection.anchorNode")}} being another type of node, **`Selection.anchorOffset`** returns the number of {{domxref("Node.childNodes")}} the selection's focus is offset within the {{domxref("Selection.anchorNode")}}.
 
 This number is zero-based. If the selection begins with the first character in the
 {{domxref("Selection.anchorNode")}}, `0` is returned.

files/en-us/web/api/selection/focusoffset/index.md

@@ -10,7 +10,9 @@ browser-compat: api.Selection.focusOffset
 
 The **`Selection.focusOffset`** read-only property returns the
 number of characters that the selection's focus is offset within the
-{{domxref("Selection.focusNode")}}.
+{{domxref("Selection.focusNode")}} if said node is of type {{domxref("Text")}}, {{domxref("CDATASection")}} or {{domxref("Comment")}}.
+
+In the case of {{domxref("Selection.focusNode")}} being another type of node, **`Selection.focusOffset`** returns the number of {{domxref("Node.childNodes")}} the selection's focus is offset within the {{domxref("Selection.focusNode")}}.
 
 This number is zero-based. If the selection ends with the first character in the
 {{domxref("Selection.focusNode")}}, `0` is returned.

files/en-us/web/css/align-self/index.md

@@ -60,7 +60,7 @@ align-self: unset;
     - In absolutely-positioned layouts, the keyword behaves like `start` on _replaced_ absolutely-positioned boxes, and as `stretch` on _all other_ absolutely-positioned boxes.
     - In static position of absolutely-positioned layouts, the keyword behaves as `stretch`.
     - For flex items, the keyword behaves as `stretch`.
-    - For grid items, this keyword leads to a behavior similar to the one of `stretch`, except for boxes with an {{glossary("aspect ratio")}} or an intrinsic sizes where it behaves like `start`.
+    - For grid items, this keyword leads to a behavior similar to the one of `stretch`, except for boxes with an {{glossary("aspect ratio")}} or an intrinsic size where it behaves like `start`.
     - The property doesn't apply to block-level boxes, and to table cells.
 
 - `self-start`