PS-9197 [DOCS] Document JS stored routines (8.0)

	new file:   docs/install-js-lang.md
	new file:   js-lang-overview.md
	modified:   mkdocs-base.yml
	new file:   uninstall-js-lang.md

docs/install-js-lang.md

@@ -0,0 +1,13 @@
+# Install js_lang component
+
+The `plugin_dir` system variable defines the component library location. If needed, at server startup, set the `plugin_dir` variable.
+
+To install the `js_lang` component, run the following command:
+
+```{.bash data-prompt="mysql>"}
+mysql> INSTALL COMPONENT 'file://component_js_lang';
+```
+
+If you uninstall the component, you may need to restart the server before a reinstall.
+
+Find more information in [INSTALL COMPONENT](install-component.md).

docs/js-lang-overview.md

@@ -0,0 +1,10 @@
+# JS Support overview
+
+Creating stored procedures in JavaScript within a MySQL-compatible database offers a flexible and efficient way to handle complex data processing. It boosts performance and makes the development process easier for those familiar with JavaScript.
+
+| **Advantage**         | **Details**      |
+|---|---|
+| **Developer Benefits** | Most developers know JavaScript well and can start writing procedures quickly. You process complex data like JSON and strings using familiar JavaScript methods. Developers use their existing JavaScript skills to write database code faster. |
+| **Performance Benefits** | Process your data directly in the database instead of moving it around. Network traffic decreases when data stays in the database.                   |
+| **Code and Tools**     | Use JavaScript's built-in functions for data tasks. Connect with JavaScript libraries and tools you already use. Write procedures using modern JavaScript features.                          |
+| **Security Benefits**  | Keep business rules inside stored procedures. Control database access through procedures. Protect your data by limiting direct table access.           |

docs/uninstall-js-lang.md

@@ -0,0 +1,9 @@
+# Uninstall the js_lang component
+
+The uninstall works only when no connections are using JavaScript stored programs. If there are connections, the procedure fails with an error.
+
+To remove the component, run the following:
+
+```{.bash data-prompt="mysql>"}
+mysql> UNINSTALL COMPONENT 'file://component_js_lang';
+```

mkdocs-base.yml

@@ -212,6 +212,10 @@ nav:
         - extended-select-into-outfile.md
         - fips.md
         - innodb-expanded-fast-index-creation.md
+        - JS Support:
+          - js-lang-overview.md
+          - install-js-lang.md
+          - uninstall-js-lang.md
         - kill-idle-trx.md
         - percona-sequence-table.md
         - procfs-plugin.md