Update 07_confirm_ending.js

Basic/07_confirm_ending.js

@@ -1,28 +1,14 @@
-// YouTube: https://youtu.be/AsLtWDncqeQ
 
 function confirmEnding(str, target) {
- str = str.toLowerCase().replace(/\W_/g, "");
- return target === str.slice(-Math.abs(target.length));
+
+  return target === str.substring(str.length - target.length);
 }
 
-/* You can replace str.slice() with str.subtr()
-   and the result will be exactly the same.
-   What is the difference?
+/* I've used the .substring method and the length property to extract the last 
+   characters of each string. Nice and neat in one line.
 
-   Both .slice() and .substr() take one required argument, which is the starting index.
-   If you don't include the second optional argument, it selects everything
-   from the start position to the end of the string.
 
-   They also take an optional second argument, and this is where they differ.
 
-   For .slice(start, end), the second argument is the end index number.
-   It will select everything up to the end index, but it won't actually include
-   the character at the end index.
-
-   For .substr(start, length), the second arugument is the length of your selection.
-   So if you write str.substr(2,4), it will select 4 characters beginning at index 2.
-
-*/
 
 console.log(confirmEnding("Bastian", "n"));
 console.log(confirmEnding("He has to give me a new name", "name"));