completed 3-to-pounds.js with comments explanation all 1-6

Author: AngelaMcLeary

Sprint-1/3-mandatory-interpret/3-to-pounds.js

@@ -24,10 +24,34 @@ console.log(`£${pounds}.${pence}`);
 // 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"
+// 1. const penceString = "399p": initialises a string variable with the value "399p" 
 
 // 2. const penceStringWithoutTrailingP = penceString.substring(0, penceString.length - 1);
-// This takes the variable penceString from the start of the string index(0) to 1 before the end 
-// and stops ie index (-1). and drops the last indexed character "p".
-
-// 3.
+//  This takes the variable penceString and uses the .substring() method to extract part of the string.
+//  It starts at index 0 and ends at penceString.length - 1, which removes the last character and
+//  outputs all characters except the trailing "p".
+//  This returns "399".
+
+// 3.const paddedPenceNumberString = penceStringWithoutTrailingP.padStart(3, "0");
+// This takes the value of the penceStringWithoutTrailingP and uses .padStart() method  to always return a minimum 
+// length of 3 characters. if the value computed is not a least 3 characters, it outputs leading 0's to make 
+// to make the string to 3 characters. If the string is 4 or more characters it just outputs the value without the leading 0's.
+// This returns "399". (examples: 45 returns 045, 1295 returns 1295)
+
+// 4.const pounds = paddedPenceNumberString.substring( 0, paddedPenceNumberString.length - 2);
+// This takes the value of paddedPenceNumberString and uses the .substring() method to extract the first art of the string.
+// It starts at index 0 and ends at paddedPenceNumberString.length - 2, which removes the last two characters.
+// This leaves the pounds portion of the value.
+// This returns "3". (examples: 45 returns 0, 1295 returns 12)
+
+// 5.const pence = paddedPenceNumberString.substring(paddedPenceNumberString.length - 2).padEnd(2, "0");
+// This takes the variable paddedPenceNumberString and extracts the last two characters using .substring(), 
+// which represent the pence. If the string is shorter than 2 characters, .padEnd(2, "0") adds trailing zeros 
+// to ensure the pence portion is always 2 digits.
+// This returns "99". (examples: 45 returns 45, 1295 returns 95)
+
+// 6. console.log(`£${pounds}.${pence}`);
+// console.log() outputs the formatted money value to the console. It uses a template literal (backticks) 
+// to embed the variables `pounds` and `pence` directly inside the string using ${} syntax.
+// The £ symbol is included at the start, and the dot separates pounds and pence.
+// This returns "£3.99" (examples: 45 returns £0.45, 1295 returns £12.95)