Doing some error change that in section 2 of sprint 1

Author: Jacknguyen4438

Sprint-1/2-mandatory-errors/0.js

@@ -1,2 +1,4 @@
-This is just an instruction for the first activity - but it is just for human consumption
-We don't want the computer to run these 2 lines - how can we solve this problem?
+/*This is just an instruction for the first activity - but it is just for human consumption
+We don't want the computer to run these 2 lines - how can we solve this problem?
+By comment both the line 1 and 2 out and the system should ignore these 2 line and see them as comment.
+*/

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;
-age = age + 1;
+let age = 33;
+age = ++age;
+
+console.log(age);
+
+/*By changing the variable from const to let since const variable value can't be change. I used prefix to increase the value and reassign it right away.*/

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

@@ -3,3 +3,7 @@
 
 console.log(`I was born in ${cityOfBirth}`);
 const cityOfBirth = "Bolton";
+
+/*the main the error here is that the console.log try to print the expression string template with the variable cityOfBirth. But since in the variable
+cityOfBirth declare after the console.log, so the console.log when try to involve the cityOfBirth will return error since the it doesn't exist.
+*/

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

@@ -1,5 +1,7 @@
 const cardNumber = 4533787178994213;
-const last4Digits = cardNumber.slice(-4);
+const last4Digits = Number(cardNumber.toString().slice(-4));
+console.log(last4Digits);
+console.log(typeof last4Digits);
 
 // The last4Digits variable should store the last 4 digits of cardNumber
 // However, the code isn't working

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

@@ -1,2 +1,6 @@
-const 12HourClockTime = "20:53";
-const 24hourClockTime = "08:53";
+const $12HourClockTime = "20:53";
+const $24HourClockTime = "08:53";
+console.log($12HourClockTime);
+console.log($24HourClockTime);
+
+/*For this error I I fix by add $(money-sign)before the 12 and 24 variable name because in JS number can't be used to begin writing a variable name */