Answering the task

Author: HANISADAH

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

@@ -1,13 +1,22 @@
+
 // Predict and explain first...
-//  =============> write your prediction here
+//  =============> I predict that we will not need to write let in line 8 as str is already declared
+// as an argument within the function captialise.
 
 // 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)}`;
+//   return str;
+// }
+
+// capitalise ('hello');
+//==============> A syntaxError occurred as 'str' is being cleared.
+
+
 function capitalise(str) {
-  let str = `${str[0].toUpperCase()}${str.slice(1)}`;
+  str = `${str[0].toUpperCase()}${str.slice(1)}`;
   return str;
 }
-
-// =============> write your explanation here
-// =============> write your new code here
+console.log (capitalise ('hello'));

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

@@ -1,20 +1,33 @@
+
 // Predict and explain first...
 
 // Why will an error occur when this program runs?
-// =============> write your prediction here
+// =============> I believe that the function convertToPercentage is not mentioned in the console.log statement.
+// Declaring the const decimalNumber is unnecessary as it is already declared as a parameter within the function convertToPercentage.
 
 // 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 = `${decimalNumber * 100}%`;
+
+  // return percentage;
+//}
+
+// console.log(decimalNumber);
+
+// =============> A syntaxError occurred saying decimalNumber is already declared.
+
+// Finally, correct the code to fix the problem
+// =============> write your new code here
+
+function convertToPercentage() {
   const decimalNumber = 0.5;
   const percentage = `${decimalNumber * 100}%`;
 
   return percentage;
 }
 
-console.log(decimalNumber);
-
-// =============> write your explanation here
+console.log(convertToPercentage());
 
-// Finally, correct the code to fix the problem
-// =============> write your new code here
+// the new code runs without error and outputs "50%"