Exclude the upper bound of range (#36283)

files/en-us/web/javascript/reference/global_objects/array/from/index.md

@@ -132,20 +132,23 @@ Array.from({ length: 5 }, (v, i) => i);
 ### Sequence generator (range)
 
 ```js
-// Sequence generator function (commonly referred to as "range", e.g. Clojure, PHP, etc.)
+// Sequence generator function (commonly referred to as "range", e.g. Python, Clojure, etc.)
 const range = (start, stop, step) =>
-  Array.from({ length: (stop - start) / step + 1 }, (_, i) => start + i * step);
+  Array.from(
+    { length: Math.ceil((stop - start) / step) },
+    (_, i) => start + i * step,
+  );
 
-// Generate numbers range 0..4
-range(0, 4, 1);
+// Generate numbers from 0 (inclusive) to 4 (exclusive) with step 1
+range(0, 5, 1);
 // [0, 1, 2, 3, 4]
 
-// Generate numbers range 1..10 with step of 2
+// Generate numbers from 1 (inclusive) to 10 (exclusive) with step 2
 range(1, 10, 2);
 // [1, 3, 5, 7, 9]
 
-// Generate the alphabet using Array.from making use of it being ordered as a sequence
-range("A".charCodeAt(0), "Z".charCodeAt(0), 1).map((x) =>
+// Generate the alphabet making use of it being ordered as a sequence
+range("A".charCodeAt(0), "Z".charCodeAt(0) + 1, 1).map((x) =>
   String.fromCharCode(x),
 );
 // ["A", "B", "C", "D", "E", "F", "G", "H", "I", "J", "K", "L", "M", "N", "O", "P", "Q", "R", "S", "T", "U", "V", "W", "X", "Y", "Z"]