added some comments in the function

Author: Grajales-K

Sprint-3/revise/investigate/find.js

@@ -1,19 +1,27 @@
 function find(str, char) {
+  //this var will store once find the index === to equal.
   let index = 0;
 
+  // The while loop iterates through each character in the string
+  //while loop will map the string and find if there is any match character in the string.
   while (index < str.length) {
     if (str[index] === char) {
+      // If the character at the current index matches the input char, return the index
       return index;
     }
+    //update the value of index and continue until index is less than the str.length.
     index++;
   }
+  // If the loop completes and no match is found, return -1
   return -1;
 }
 
-console.log(find("code your future", "u"));
-console.log(find("code your future", "z"));
+console.log(find("hello word find my index", "x")); // Output: 23
+console.log(find("code your future", "f")); // Output: 10
+console.log(find("code your future", "z")); // Output: -1
 
-// The while loop statement allows us to do iteration - the repetition of a certain number of tasks according to some condition
+// The while loop statement allows us to do iteration - the repetition of a certain number
+//  of tasks according to some condition
 // See the docs https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/while
 
 // Use the Python Visualiser to help you play computer with this example and observe how this code is executed