sprint 2

Author: mjm-git185

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

@@ -1,23 +1,13 @@
 // Predict and explain first...
 //  =============> write your prediction here
-// you will get an error becuase srt has alredy been declared
-
 
 // call the function capitalise with a string input
 // interpret the error message and figure out why an error is occurring
 
-/*function capitalise(str) {
+function capitalise(str) {
   let str = `${str[0].toUpperCase()}${str.slice(1)}`;
-  return str;*/
-
+  return str;
+}
 
 // =============> write your explanation here
-//let str = `${str[0].toUpperCase()}${str.slice(1)}`;
-  //    ^
-
-//SyntaxError: Identifier 'str' has already been declared
 // =============> write your new code here
-function capitalise(str) {
-  let strTwo = `${str[0].toUpperCase()}${str.slice(1)}`;
-  return str;
-}

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

@@ -1,29 +1,20 @@
 // Predict and explain first...
 
 // Why will an error occur when this program runs?
-// the veriable decimalNumber has already been declared
-
-
 // =============> write your prediction here
 
 // Try playing computer with the example to work out what is going on
 
-/*function convertToPercentage(decimalNumber) {
+function convertToPercentage(decimalNumber) {
   const decimalNumber = 0.5;
   const percentage = `${decimalNumber * 100}%`;
 
   return percentage;
 }
 
-console.log(decimalNumber);*/
+console.log(decimalNumber);
 
 // =============> write your explanation here
 
-
 // Finally, correct the code to fix the problem
 // =============> write your new code here
-function convertToPercentage(decimalNumber) {
-  decimalNumber = 0.5;
-  const percentage = `${decimalNumber * 100}%`;
-  return percentage;
- } 

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

@@ -2,29 +2,19 @@
 // Predict and explain first BEFORE you run any code...
 
 // this function should square any number but instead we're going to get an error
-// there is nothing con nectimng the 3 to the variable num
+
 // =============> write your prediction of the error here
 
-/*function square(3) {
+function square(3) {
     return num * num;
 }
-*/
-// =============> write the error message here
-//function square(3) {
-   //             ^
 
-//SyntaxError: Unexpected number
+// =============> write the error message here
 
 // =============> explain this error message here
-// it was expecting a variable not a number
 
 // Finally, correct the code to fix the problem
 
 // =============> write your new code here
 
 
-function square(num) {
-    num = 3;
-    return num * num;
-}
-console.log(square());

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

@@ -1,6 +1,6 @@
 // Predict and explain first...
 
-// =============> write your prediction here it should print "The result of multiplying 10 and 32 is 320"
+// =============> write your prediction here
 
 function multiply(a, b) {
   console.log(a * b);

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

@@ -1,18 +1,13 @@
 // Predict and explain first...
 //  =============> write your prediction here
-//i dont think it will give an answer becuse the semi-colon is after return
-/*function sum(a, b) {
+
+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
-function sum(a, b) {
-  return a + b;
-}
-
-console.log(`The sum of 10 and 32 is ${sum(10, 32)}`);

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

@@ -1,36 +1,24 @@
 // Predict and explain first...
-//
+
 // Predict the output of the following code:
-// =============> Write your prediction here  i thing this one will work
+// =============> Write your prediction here
 
-/*const num = 103;
+const num = 103;
 
 function getLastDigit() {
   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)}`);*/
+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
-// i was incorrect the const at the top makes them all come out as 3
 // Explain why the output is the way it is
 // =============> write your explanation here
-// the constant can't be changed by the code block and num needs to be part of the function
 // Finally, correct the code to fix the problem
 // =============> write your new code here
 
-let num = 0;
-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)}`);
-
-
 // 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

@@ -15,5 +15,8 @@
 // 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
-}
+    let heightsq = height * height;
+    return weight/heightsq;
+  // return the BMI of someone based off their weight and height
+}
+console.log(calculateBMI(30, 10));

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

@@ -14,3 +14,10 @@
 // You will need to come up with an appropriate name for the function
 // Use the MDN string documentation to help you find a solution
 // This might help https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/toUpperCase
+
+function SNAKE_CASE (mesasge){
+    let snake = mesasge.replace(/ /g,"_");
+    let upper = snake.toUpperCase();
+    return upper;
+}
+console.log(SNAKE_CASE("hello there"));

Sprint-2/3-mandatory-implement/3-to-pounds.js

@@ -4,3 +4,14 @@
 // You will need to declare a function called toPounds with an appropriately named parameter.
 
 // You should call this function a number of times to check it works for different inputs
+
+function toPounds(penceString) {
+  let penceStringWithoutTrailingP = penceString.replace( /[^1-9]/g, ""); //39772
+  const paddedPenceNumberString = penceStringWithoutTrailingP.padStart(3, "0"); //39772
+  const pounds = paddedPenceNumberString.substring( 0, paddedPenceNumberString.length - 2 ); // 397
+  const pence = paddedPenceNumberString.substring(paddedPenceNumberString.length - 2)
+.padEnd(2, "0"); // 72
+  return `£${pounds}.${pence}`; // 397.72
+
+}
+console.log(toPounds("397d72p"));