updated ext variable to use the lastindexof method and explained why

Author: marscancode

Sprint-2/1-key-exercises/3-paths.js

@@ -9,13 +9,13 @@
 
 // (All spaces in the "" line should be ignored. They are purely for formatting.)
 
-const filePath = "/Users/mitch/cyf/Module-JS1/week-1/interpret/file.txt";
+const filePath = "/Users/mitch/cyf/Module-JS1/week-1/interpret/photo/file.txt";
 const lastSlashIndex = filePath.lastIndexOf("/"); //44
 const base = filePath.slice(lastSlashIndex + 1); //file.txt
-//console.log(`The base part of ${filePath} is ${base}`);
+console.log(`The base part of ${filePath} is ${base}`);
 
 const dir = filePath.slice(0, lastSlashIndex);
-const ext = filePath.slice(-4);
-console.log(dir);
+const ext = filePath.slice(filePath.lastIndexOf("."));
+//lastIndexOf() method works better here because it'll look for the last time "." appears in the file path which will always give the correct file ext instead of going a set number back with the slice() method i used previously  which may not work for every file extension depending on it length. So now console.log will print .txt or .jpeg if that was the file ext
 console.log(ext);
 // https://www.google.com/search?q=slice+mdn