completed js excercises

Author: Enice-Codes

Module-Structuring-and-Testing-Data

@@ -2,10 +2,15 @@ let count = 0;
 
 count = count + 1;
 
+
 // Line 3 reassigns the value of count.
+//  count = 0 +1 ;
+// count = 1
+
 // The expression on the right side (count + 1) is evaluated first using the current value of count.
 // The =  assignment operator then stores the result back into the count variable, replacing its previous value.
 
 
 // Line 1 is a variablbe declaration, creating the count variable with an initial value of 0
 // Describe what line 3 is doing, in particular focus on what = is doing
+// In line 3 the = operator assigns a new value to the variable count.

Sprint-1/1-key-exercises/1-count.js

@@ -7,4 +7,5 @@ let lastName = "Johnson";
 
 let initials = `${firstName[0]}${middleName[0]}${lastName[0]}`;
 
+
 // https://www.google.com/search?q=get+first+character+of+string+mdn

Sprint-1/1-key-exercises/2-initials.js

@@ -14,9 +14,11 @@ const base = filePath.slice(lastSlashIndex + 1);
 console.log(`The base part of ${filePath} is ${base}`);
 
 // Create a variable to store the dir part of the filePath variable
-// Create a variable to store the ext part of the variable
 
 const dir = filePath.slice (0,lastSlashIndex);
+
+// Create a variable to store the ext part of the variable
+
 const ext = base.slice(base.lastIndexOf(".") + 1);
 
 // https://www.google.com/search?q=slice+mdn

Sprint-1/1-key-exercises/3-paths.js

@@ -1,16 +1,19 @@
-const minimum = 1;
-const maximum = 100;
+const minimum = 3;
+const maximum = 50;
 
 const num = Math.floor(Math.random() * (maximum - minimum + 1)) + minimum;
 
 // In this exercise, you will need to work out what num represents?
+// the num is random number between 1 and 100.
 // Try breaking down the expression and using documentation to explain what it means
-
-//num is a random number between 1 and 100 
+// const minimum is a function expression
+// = 1 is a minimum value assigned by the operator for the minimum 
+// = 100  is the maximum value assigned by the operator for the function.
 
 // Method.floor generates a random number between 0 and 1 to nearest interger (whole number)
 //Math.random generates a decimal number between 0 and 1 .
 
 // It will help to think about the order in which expressions are evaluated
 // Try logging the value of num and running the program several times to build an idea of what the program is doing
 console.log(num);
+// I noticed that the different values change the print result .

Sprint-1/1-key-exercises/4-random.js

@@ -1,7 +1,8 @@
 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?
 
-// we can use //to comment out the lines of code we don't want to run.
 
 //his 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?
+//We don't want the computer to run these 2 lines - how can we solve this problem?
+
+// we can use //to comment out the lines of code we don't want to run.

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

@@ -1,5 +1,5 @@
 // trying to create an age variable and then reassign the value by 1
 
 let age = 33;
-age = age + 1;
+age = 33 + 1;
 console.log(age);

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

@@ -6,16 +6,21 @@ const last4Digits =  String(cardNumber).slice(-4);
 console.log(last4Digits); // "4213"
 
 
-let prediction = " because of the lack of slice method available for numbers,I predict that the code will throw an error. the cardNumber variable is a number, and slice is a method that can only be used on strings or arrays.";
- slice is a method that can only be used on strings or arrays."
+ //.slice () works on arrays and strings
 
- //.slice () works on arrays and strings 
 
- // i ran the code the error i got was excatly as predicted.
- 
-// 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
 // Then run the code and see what error it gives.
+ // I ran the code the error i got was excatly as predicted.
+ 
+
 // Consider: Why does it give this error? Is this what I predicted? If not, what's different?
+// let prediction = " because of the lack of slice method available for numbers,I predict that the code will throw an error. 
+// the cardNumber variable is a number, and slice is a method that can only be used on strings or arrays.";
+ //slice is a method that can only be used on strings or arrays." //
+
 // Then try updating the expression last4Digits is assigned to, in order to get the correct value
+
+// The last4Digits variable should store the last 4 digits of cardNumber
+console.log(last4Digits); // "4213"