done with mandetory errors

Author: obstie

Sprint-1/2-mandatory-errors/1.js

@@ -1,4 +1,8 @@
 // trying to create an age variable and then reassign the value by 1
 
-const age = 33;
+let age = 33;
 age = age + 1;
+age = 1;
+
+
+// Will remove the constant varible and use the let keyword

Sprint-1/2-mandatory-errors/2.js

@@ -1,5 +1,8 @@
 // Currently trying to print the string "I was born in Bolton" but it isn't working...
 // what's the error ?
 
-console.log(`I was born in ${cityOfBirth}`);
 const cityOfBirth = "Bolton";
+console.log(`I was born in ${cityOfBirth}`);
+
+
+// The variable was at the bottom so we could not access it, so it has to be hoisted at the top

Sprint-1/2-mandatory-errors/3.js

@@ -1,9 +1,18 @@
 const cardNumber = 4533787178994213;
-const last4Digits = cardNumber.slice(-4);
+// const last4Digits = cardNumber.slice(-4);
+const last4Digits = String(cardNumber).slice(-4);
+console.log(last4Digits);
 
 // The last4Digits variable should store the last 4 digits of cardNumber
 // However, the code isn't working
 // Before running the code, make and explain a prediction about why the code won't work
+// Answer: Missing console.log
 // Then run the code and see what error it gives.
+// Error:we had TypeError: cardNumber.slice is not a function
 // Consider: Why does it give this error? Is this what I predicted? If not, what's different?
+// "cardNumber.slice" must declared as a function, this is not what i thought, the difference is that the code is incomplete and so will add a function
 // Then try updating the expression last4Digits is assigned to, in order to get the correct value
+
+
+// After some research i found out that ".slice()" only works on strings so we have to convert the numbers into a string first
+// Also learned abour method chaining

Sprint-1/2-mandatory-errors/4.js

@@ -1,2 +1,4 @@
-const 12HourClockTime = "20:53";
-const 24hourClockTime = "08:53";
+const HourClockTime12 = "20:53";
+const hourClockTime24 = "08:53";
+
+// You cannot name a variable starting witha number