Fix array some grammar

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

@@ -8,7 +8,7 @@ sidebar: jsref
 ---
 
 The **`find()`** method of {{jsxref("Array")}} instances returns the first element in the provided array that satisfies the provided testing function.
-If no values satisfy the testing function, {{jsxref("undefined")}} is returned.
+If no values satisfies the testing function, {{jsxref("undefined")}} is returned.
 
 - If you need the **index** of the found element in the array, use {{jsxref("Array/findIndex", "findIndex()")}}.
 - If you need to find the **index of a value**, use {{jsxref("Array/indexOf", "indexOf()")}}.

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

@@ -7,8 +7,7 @@ browser-compat: javascript.builtins.Array.indexOf
 sidebar: jsref
 ---
 
-The **`indexOf()`** method of {{jsxref("Array")}} instances returns the first index at which a
-given element can be found in the array, or -1 if it is not present.
+The **`indexOf()`** method of {{jsxref("Array")}} instances returns the first index at which an element can be found in the array, or -1 if it is not present.
 
 {{InteractiveExample("JavaScript Demo: Array.prototype.indexOf()")}}
 
@@ -36,10 +35,10 @@ indexOf(searchElement, fromIndex)
 ### Parameters
 
 - `searchElement`
-  - : Element to locate in the array.
+  - : The element to locate in the array.
 - `fromIndex` {{optional_inline}}
   - : Zero-based index at which to start searching, [converted to an integer](/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number#integer_conversion).
-    - Negative index counts back from the end of the array — if `-array.length <= fromIndex < 0`, `fromIndex + array.length` is used. Note, the array is still searched from front to back in this case.
+    - Negative index counts back from the end of the array — if `-array.length <= fromIndex < 0`, `fromIndex + array.length` is used. Note: the array is still searched from front to back in this case.
     - If `fromIndex < -array.length` or `fromIndex` is omitted, `0` is used, causing the entire array to be searched.
     - If `fromIndex >= array.length`, the array is not searched and `-1` is returned.
 
@@ -49,7 +48,7 @@ The first index of `searchElement` in the array; `-1` if not found.
 
 ## Description
 
-The `indexOf()` method compares `searchElement` to elements of the array using [strict equality](/en-US/docs/Web/JavaScript/Reference/Operators/Strict_equality) (the same algorithm used by the `===` operator). [`NaN`](/en-US/docs/Web/JavaScript/Reference/Global_Objects/NaN) values are never compared as equal, so `indexOf()` always returns `-1` when `searchElement` is `NaN`.
+The `indexOf()` method compares `searchElement` to elements of the array using [strict equality](/en-US/docs/Web/JavaScript/Reference/Operators/Strict_equality) (the same algorithm used by the `===` operator). [`NaN`](/en-US/docs/Web/JavaScript/Reference/Global_Objects/NaN) values are never considered equal, so `indexOf()` always returns `-1` when `searchElement` is `NaN`.
 
 The `indexOf()` method skips empty slots in [sparse arrays](/en-US/docs/Web/JavaScript/Guide/Indexed_collections#sparse_arrays).
 

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

@@ -53,7 +53,7 @@ The `some()` method is an [iterative method](/en-US/docs/Web/JavaScript/Referenc
 
 `callbackFn` is invoked only for array indexes which have assigned values. It is not invoked for empty slots in [sparse arrays](/en-US/docs/Web/JavaScript/Guide/Indexed_collections#sparse_arrays).
 
-`some()` does not mutate the array on which it is called, but the function provided as `callbackFn` can. Note, however, that the length of the array is saved _before_ the first invocation of `callbackFn`. Therefore:
+`some()` does not mutate the array on which it is called, but the function provided as `callbackFn` can. However, note that the length of the array is saved _before_ the first invocation of `callbackFn`. Therefore:
 
 - `callbackFn` will not visit any elements added beyond the array's initial length when the call to `some()` began.
 - Changes to already-visited indexes do not cause `callbackFn` to be invoked on them again.