clean the accidental Sprint-2

Author: Arthur

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

@@ -1,25 +1,13 @@
+// Predict and explain first...
+//  =============> write your prediction here
 
+// call the function capitalise with a string input
+// interpret the error message and figure out why an error is occurring
 
 function capitalise(str) {
-  let str = '${str[0].toUpperCase()}${str.slice(1)}`;
+  let str = `${str[0].toUpperCase()}${str.slice(1)}`;
   return str;
 }
 
-It said syntaxError because identifier 'str' has already been declared 
-because we should use backtick`` to wrap the template literal.The first one of the bracket is a
-single quote, not a backtick.
-
-  Also, since str has already been declared as a parameter, we should not use it to define as variable.
-
-
-
-
-
-function capitalise(str) {
-
-  let result = `${str[0].toUpperCase() + str.slice(1)}`;
-  return result;
-}
-
-console.log(capitalise("str"));
-
+// =============> write your explanation here
+// =============> write your new code here

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

@@ -1,25 +1,20 @@
-function convertToPercentage(decimalNumber) {
-  const decimalNumber = 0.5;
-  const percentage = `${decimalNumber * 100}%`;
-
-  return percentage;
-}
-
-console.log(decimalNumber);
-
-The terminal shows the syntax error because decimal number has been declared.
-because the decimal number is a variable which is not supposed to define in the function, 
-but the decimal number has been defined insides the functon, so it will forever return 50 %.
-  Also, when we call the fucnton, we should name the function convertToPercentage.
+// Predict and explain first...
 
+// Why will an error occur when this program runs?
+// =============> write your prediction here
 
+// Try playing computer with the example to work out what is going on
 
 function convertToPercentage(decimalNumber) {
-
+  const decimalNumber = 0.5;
   const percentage = `${decimalNumber * 100}%`;
 
   return percentage;
 }
 
-console.log(convertToPercentage(0.5));
+console.log(decimalNumber);
+
+// =============> write your explanation here
 
+// Finally, correct the code to fix the problem
+// =============> write your new code here

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

@@ -1,22 +1,20 @@
 
+// Predict and explain first BEFORE you run any code...
 
+// this function should square any number but instead we're going to get an error
+
+// =============> write your prediction of the error here
 
 function square(3) {
     return num * num;
 }
 
+// =============> write the error message here
 
-    It shows the syntax error which is an unexpected number;
-    because we should not put 3 insides the variable, because it will lead to variable: num not defined
-insides the function, so the 3 doesn't work insides the function.
-
-We need to put num instead of 3 insides the();
-That way when we call the function by using console.log.The 3 will go into the num variable.
-
+// =============> explain this error message here
 
-function square(num) {
-    return num * num;
-}
+// Finally, correct the code to fix the problem
 
+// =============> write your new code here
 
 

Sprint-2/2-mandatory-debug/0.js

@@ -1,20 +1,14 @@
+// Predict and explain first...
 
-The problem is unexpected identifier "problem"
-The problem is the result doesn't print the mulitplication of the number,
-because we should not call the function inside the function;
-
+// =============> write your prediction here
 
 function multiply(a, b) {
   console.log(a * b);
 }
 
 console.log(`The result of multiplying 10 and 32 is ${multiply(10, 32)}`);
 
-Instead, we should define the expression a * b
-and return the expression.
-
-/ function multiply(a, b) {
-    return (a * b);
-  }
+// =============> write your explanation here
 
-console.log(`The result of multiplying 10 and 32 is ${multiply(10, 32)}`);
+// Finally, correct the code to fix the problem
+//  =============> write your new code here

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

@@ -1,5 +1,5 @@
-Unexpected identifier "problem"
-variable hasn't been defined so the variable cannot do function.
+// Predict and explain first...
+//  =============> write your prediction here
 
 function sum(a, b) {
   return;
@@ -8,14 +8,6 @@ function sum(a, b) {
 
 console.log(`The sum of 10 and 32 is ${sum(10, 32)}`);
 
-
-because return should be followed by a + b;
-the final result doesn't return the value. 
-
-
-function sum(a, b) {
-  return;
-  a + b;
-}
-
-console.log(`The sum of 10 and 32 is ${sum(10, 32)}`);
+// =============> write your explanation here
+// Finally, correct the code to fix the problem
+//  =============> write your new code here

Sprint-2/2-mandatory-debug/2.js

@@ -1,12 +1,7 @@
+// Predict and explain first...
 
-The const should not be put into the global frame. 
-if it is set in the global frame,  this will result in a single result:3, 
-no matter which variables you put in later. 
-
-The variable insides should have num to match the function expression. 
-
-
-My prediction of the result will be all in 3.
+// Predict the output of the following code:
+// =============> Write your prediction here
 
 const num = 103;
 
@@ -18,22 +13,12 @@ console.log(`The last digit of 42 is ${getLastDigit(42)}`);
 console.log(`The last digit of 105 is ${getLastDigit(105)}`);
 console.log(`The last digit of 806 is ${getLastDigit(806)}`);
 
+// Now run the code and compare the output to your prediction
+// =============> write the output here
+// Explain why the output is the way it is
+// =============> write your explanation here
+// Finally, correct the code to fix the problem
+// =============> write your new code here
 
-
-yes the output is all in 3, because the reason are above .
-
-
-
-... ... ... ... ... ... ... ... ... ... ... ... ... ... ...
-
-function getLastDigit(num) {
-  return num.toString().slice(-1);
-}
-
-console.log(`The last digit of 42 is ${getLastDigit(42)}`);
-console.log(`The last digit of 105 is ${getLastDigit(105)}`);
-console.log(`The last digit of 806 is ${getLastDigit(806)}`);
-
-
-After we delete the global frame and put in the variable, we see
-the result now shows three different digit number.
+// This program should tell the user the last digit of each number.
+// Explain why getLastDigit is not working properly - correct the problem

Sprint-2/3-mandatory-implement/1-bmi.js

@@ -1,20 +1,19 @@
+// Below are the steps for how BMI is calculated
 
+// The BMI calculation divides an adult's weight in kilograms (kg) by their height in metres (m) squared.
 
+// For example, if you weigh 70kg (around 11 stone) and are 1.73m (around 5 feet 8 inches) tall, you work out your BMI by:
 
-function calculateBMI(weight, height) {
-
-    let newheight = height / 100;
-    let num = weight / (newheight ** 2);
-    let idea = num.toFixed(1);
-
-    return idea;
-}
-
-
-console.log(calculateBMI(58, 178));
-
-
-
+// squaring your height: 1.73 x 1.73 = 2.99
+// dividing 70 by 2.99 = 23.41
+// Your result will be displayed to 1 decimal place, for example 23.4.
 
+// You will need to implement a function that calculates the BMI of someone based off their weight and height
 
+// Given someone's weight in kg and height in metres
+// Then when we call this function with the weight and height
+// It should return their Body Mass Index to 1 decimal place
 
+function calculateBMI(weight, height) {
+    // return the BMI of someone based off their weight and height
+}

Sprint-2/3-mandatory-implement/2-cases.js

@@ -4,16 +4,6 @@
 // UPPER_SNAKE_CASE means taking a string and writing it in all caps with underscores instead of spaces.
 
 // Implement a function that:
-function convertToUpperCase(text) {
-const result = text.toUpperCase();
-return result;
-} 
-
-console.log(convertToUpperCase("hello"));
-
-
-
-
 
 // Given a string input like "hello there"
 // When we call this function with the input string