fixed 1-key-errors

Author: Ofonimeedak

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

@@ -2,12 +2,28 @@
 //  =============> 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)}`;
-  return str;
+  let outputStr = `${str[0].toUpperCase()}${str.slice(1)}`;
+  console.log(outputStr);
+  return outputStr;
 }
+capitalise("edak");
 
 // =============> write your explanation here
+
+//expecting the function to return the  characters of the string, with the first character capitalized.
+
+//syntaxError: Identifier 'str' has already been declared.
+// The variable str  has already been passed as parameter in the function (), declaring it again cause an identity error
+
 // =============> write your new code here
+
+// function capitalise(str) {
+// let outputStr = `${str[0].toUpperCase()}${str.slice(1)}`;
+// console.log(outputStr);
+// return outputStr;
+//};
+//capitalise('edak')

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

@@ -1,8 +1,10 @@
 // Predict and explain first...
 
 // Why will an error occur when this program runs?
-// =============> write your prediction here
 
+// =============> write your prediction here
+// decimalNumber is supplied as a function parameter and and also declared as a variable,
+// it will throw an identifier syntaxError.
 // Try playing computer with the example to work out what is going on
 
 function convertToPercentage(decimalNumber) {
@@ -15,6 +17,15 @@ function convertToPercentage(decimalNumber) {
 console.log(decimalNumber);
 
 // =============> write your explanation here
-
+// playing computer with the first code throw syntaxError: decimalNumber has been already declared.
 // Finally, correct the code to fix the problem
+
 // =============> write your new code here
+
+function convertToPercentage(decimalNumber) {
+  // const decimalNumber = 0.5;
+  const percentage = `${decimalNumber * 100}%`;
+  return percentage;
+}
+
+console.log(convertToPercentage(0.5));

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

@@ -1,20 +1,28 @@
 
 // Predict and explain first BEFORE you run any code...
+//This code is to take one number function parameter and return  area.
 
 // this function should square any number but instead we're going to get an error
 
-// =============> write your prediction of the error here
+// =============> write your prediction of the error here.
+// syntaxError: passing an argument instead for a parameter.
 
 function square(3) {
     return num * num;
 }
 
 // =============> write the error message here
+//SyntaxError:Unexpected number
 
 // =============> explain this error message here
+//The function was not expecting number during declaration
 
 // Finally, correct the code to fix the problem
 
-// =============> write your new code here
 
+// =============> write your new code here
 
+//function square(num) {
+ //   return num * num;
+//}
+//console.log(square(3))