done to-pounds.js

Author: Grajales-K

Sprint-1/interpret/to-pounds.js

@@ -6,6 +6,7 @@ const penceStringWithoutTrailingP = penceString.substring(
 );
 
 const paddedPenceNumberString = penceStringWithoutTrailingP.padStart(3, "0");
+
 const pounds = paddedPenceNumberString.substring(
   0,
   paddedPenceNumberString.length - 2
@@ -14,6 +15,7 @@ const pounds = paddedPenceNumberString.substring(
 const pence = paddedPenceNumberString
   .substring(paddedPenceNumberString.length - 2)
   .padEnd(2, "0");
+  console.log(pence)
 
 console.log(`£${pounds}.${pence}`);
 
@@ -23,5 +25,35 @@ console.log(`£${pounds}.${pence}`);
 // You need to do a step-by-step breakdown of each line in this program
 // Try and describe the purpose / rationale behind each step
 
-// To begin, we can start with
-// 1. const penceString = "399p": initialises a string variable with the value "399p"
+/*
+  To begin, we can start with
+  1. const penceString = "399p": initialize a string variable with the value "399p"
+
+  2. const penceStringWithoutTrailingP = penceString.substring(0,penceString.length - 1);
+    ----- This is removing the last character from the string and because is negative argument 
+          we should provide the starter point and end index to override the character.
+
+  3. const paddedPenceNumberString = penceStringWithoutTrailingP.padStart(3, "0");
+    ----- The padStart function modifies the string by adding a specified character at the 
+          beginning if the string is shorter than the desired length. In this case, 
+          padStart(3, "0") checks if the string has fewer than 3 characters. If it does, 
+          it adds "0" at the beginning until the string reaches a length of 3. eg.
+          const penceString = "9p";  => £0.09 
+          const penceString = "44p"; => £0.44
+          const penceString = "0p";  => £0.00
+
+  4. const pounds = paddedPenceNumberString.substring(0,paddedPenceNumberString.length - 2);
+    ----- Here we are using again subtracting function to extract the integer number removing 
+          the decimals given the argument(0, string.length -2). this means return the string 
+          starting from position 0 and removing the last two characters.
+
+  5. const pence = paddedPenceNumberString.substring(paddedPenceNumberString.length - 2).padEnd(2, "0");
+    ----- Extracting the decimal numbers and gets the last two characters of the string, which 
+          represent the pence part.
+
+  6. console.log(`£${pounds}.${pence}`);
+    ----- This line displays the formatted currency value by using template literals to interpolate 
+          the pounds and pence variables into a single string. The £ symbol is added at the beginning 
+          to indicate currency. eg.
+          const penceString = "399p"; => £3.99
+*/