From d6bd7c70ea5e1ec355f7135e12658e5f721c6378 Mon Sep 17 00:00:00 2001
From: Stuart Mosquera <stuartmosquera18@gmail.com>
Date: Thu, 9 Oct 2025 13:47:57 -0300
Subject: [PATCH 1/3] create keys.md

---
 .../concepts/map/terms/keys/keys.md           | 101 ++++++++++++++++++
 1 file changed, 101 insertions(+)
 create mode 100644 content/javascript/concepts/map/terms/keys/keys.md

diff --git a/content/javascript/concepts/map/terms/keys/keys.md b/content/javascript/concepts/map/terms/keys/keys.md
new file mode 100644
index 00000000000..ad56b46022b
--- /dev/null
+++ b/content/javascript/concepts/map/terms/keys/keys.md
@@ -0,0 +1,101 @@
+---
+Title: '.keys()'
+Description: 'Returns a new map iterator object that contains the keys of each element in the map.'
+Subjects:
+  - 'Computer Science'
+  - 'Web Development'
+Tags:
+  - 'Map'
+  - 'Object'
+CatalogContent:
+  - 'introduction-to-javascript'
+  - 'paths/front-end-engineer-career-path'
+---
+
+The **`.keys()`** method returns a new map [iterator](https://www.codecademy.com/resources/docs/javascript/iterators) object containing the keys of each element in the map, respecting the insertion order. This method enables explicit iteration using a `for...of` loop or the iterator's `.next()` method.
+
+> **Note:** The iterable returned by `.keys()` is _not reusable_. Once it has been fully consumed (i.e., all elements have been iterated over), it becomes exhausted. To iterate again, a new iterator must be created by calling `.keys()` again on the map.
+
+## Syntax
+
+```javascript
+map.keys();
+```
+
+**Parameters:**
+
+The `.keys()` method does not take any parameters.
+
+**Return value:**
+
+Returns a new map iterator object containing the keys of each element in the map, in order.
+
+## Example 1: Printing Each Key
+
+This example uses a `for...of` loop to iterate over the iterable object returned by `.keys()` and prints the keys of the `ratings` map:
+
+```javascript
+const ratings = new Map();
+
+ratings.set(1, 'Bad');
+ratings.set(5, 'Medium');
+ratings.set(10, 'Excellent');
+
+const iterator = ratings.keys();
+
+for (const key of iterator) {
+  console.log(key);
+}
+```
+
+The code will produce this output:
+
+```shell
+1
+5
+10
+```
+
+## Example 2: Getting the Values
+
+In this example, the keys are saved in the `numsKeys` array, and the map's [`.get()`](https://www.codecademy.com/resources/docs/javascript/map/get) method is used to retrieve and print each value.
+
+```javascript
+const nums = new Map([
+  [2, 'Two'],
+  [4, 'Four'],
+  [6, 'Six'],
+  [8, 'Eight'],
+]);
+
+const numsKeys = Array.from(nums.keys());
+
+numsKeys.forEach((key) => console.log(nums.get(key)));
+```
+
+The code will produce this output:
+
+```shell
+Two
+Four
+Six
+Eight
+```
+
+## Codebyte Example
+
+This example uses the `.next()` method to manually iterate through the keys ​​and print them to the console:
+
+```codebyte/js
+const map = new Map();
+
+map.set(1, 'One');
+map.set(true, 'True');
+map.set({ id: 1 }, 'Object');
+
+const iterator = map.keys();
+
+console.log(iterator.next().value);
+console.log(iterator.next().value);
+console.log(iterator.next().value);
+```

From 1248d2d78b4b8853c3d720d4d94e9de56e868851 Mon Sep 17 00:00:00 2001
From: Mamta Wardhani <mamta.wardhani@gmail.com>
Date: Fri, 10 Oct 2025 16:07:07 +0530
Subject: [PATCH 2/3] minor fixes

---
 content/javascript/concepts/map/terms/keys/keys.md | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/content/javascript/concepts/map/terms/keys/keys.md b/content/javascript/concepts/map/terms/keys/keys.md
index ad56b46022b..553debe6bcc 100644
--- a/content/javascript/concepts/map/terms/keys/keys.md
+++ b/content/javascript/concepts/map/terms/keys/keys.md
@@ -18,7 +18,7 @@ The **`.keys()`** method returns a new map [iterator](https://www.codecademy.com
 
 ## Syntax
 
-```javascript
+```pseudo
 map.keys();
 ```
 
@@ -34,7 +34,7 @@ Returns a new map iterator object containing the keys of each element in the map
 
 This example uses a `for...of` loop to iterate over the iterable object returned by `.keys()` and prints the keys of the `ratings` map:
 
-```javascript
+```js
 const ratings = new Map();
 
 ratings.set(1, 'Bad');
@@ -58,9 +58,9 @@ The code will produce this output:
 
 ## Example 2: Getting the Values
 
-In this example, the keys are saved in the `numsKeys` array, and the map's [`.get()`](https://www.codecademy.com/resources/docs/javascript/map/get) method is used to retrieve and print each value.
+In this example, the keys are saved in the `numsKeys` array, and the map's [`.get()`](https://www.codecademy.com/resources/docs/javascript/map/get) method is used to retrieve and print each value:
 
-```javascript
+```js
 const nums = new Map([
   [2, 'Two'],
   [4, 'Four'],

From 062905a85f9445028f3f41f678ec7a97b58f5b19 Mon Sep 17 00:00:00 2001
From: Avdhoot <50920321+avdhoottt@users.noreply.github.com>
Date: Mon, 20 Oct 2025 14:19:54 +0530
Subject: [PATCH 3/3] Update content/javascript/concepts/map/terms/keys/keys.md

---
 content/javascript/concepts/map/terms/keys/keys.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/content/javascript/concepts/map/terms/keys/keys.md b/content/javascript/concepts/map/terms/keys/keys.md
index 553debe6bcc..82c3fc63c3d 100644
--- a/content/javascript/concepts/map/terms/keys/keys.md
+++ b/content/javascript/concepts/map/terms/keys/keys.md
@@ -86,7 +86,7 @@ Eight
 
 This example uses the `.next()` method to manually iterate through the keys ​​and print them to the console:
 
-```codebyte/js
+```codebyte/javascript
 const map = new Map();
 
 map.set(1, 'One');