Flat method Tip

README.md

@@ -31,7 +31,7 @@ There are a lot of ways to get updates, choose your own
 > Don't forget to Star★ the repo, as this helps promoting the project!
 
 # Tips list
-
+- 75 - [Using flat method in JS]()
 - 74 - [Check the reason make your page re-render by changed props and state](http://www.jstips.co/en/react/trace-the-reason-make-your-page-rerender/)
 - 73 - [Hash maps without side effects](http://www.jstips.co/en/javascript/hash-maps-without-side-effects/)
 - 72 - [Adventurers Guide to React (Part I)](http://www.jstips.co/en/react/adventurers-guide-to-react/)

_posts/en/javascript/2021-02-20-using-flat-method.md

@@ -0,0 +1,31 @@
+---
+layout: post
+
+title: What is the flat method?
+tip-number: 75
+tip-username: katiie
+tip-username-profile: https://github.com/katiie
+tip-tldr: The flat method is used to flatten an array
+
+categories:
+    - en
+    - javascript
+---
+
+The Flat operation creates a new array from an array with all sub-array elements concatenated into it recursively up to the specified depth.
+This method can be used to flatten the records into one array.
+
+```javascript
+// Flattening arrays and objects
+let arr1 = [["$6"], ["$12"], ["$25"], [["$18"]]]; 
+let flattenedArray = arr1.flat();
+console.log(flattenedArray);
+// Output: [ $6, $12, $25, ["$18"] ] 
+
+```javascript
+flattenedArray = arr1.flat(2);
+console.log(flattenedArray);
+// Output: [ $6, $12, $25, $18 ] 
+
+```javascript
+```