Completed Sprint-2 1-key-errors

Author: shafiekwalker7861

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

@@ -9,5 +9,10 @@ function capitalise(str) {
   return str;
 }
 
-// =============> write your explanation here
-// =============> write your new code here
+// The error is on line 8.
+// The parameter 'str' has already been declared in the function.
+// Declaring 'let str' again causes the error.
+function capitalise(str) {
+  let capitalisedStr = `${str[0].toUpperCase()}${str.slice(1)}`;
+  return capitalisedStr;
+}

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

@@ -14,7 +14,13 @@ function convertToPercentage(decimalNumber) {
 
 console.log(decimalNumber);
 
-// =============> write your explanation here
+// The parameter decimalNumber is already declared.
+// Declaring const decimalNumber again causes the error.
 
 // Finally, correct the code to fix the problem
-// =============> write your new code here
+function convertToPercentage(decimalNumber) {
+  const percentage = `${decimalNumber * 100}%`;
+  return percentage;
+}
+
+console.log(convertToPercentage(0.5));

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

@@ -3,18 +3,21 @@
 
 // this function should square any number but instead we're going to get an error
 
-// =============> write your prediction of the error here
+// function parameter should not be a number, it should be a variable name that holds a number.
+// the parameter is a placeholder for the number.
 
 function square(3) {
     return num * num;
 }
 
-// =============> write the error message here
+// SyntaxError: Unexpected number
 
-// =============> explain this error message here
+// The error occurs because a function parameter must be a variable name, not a number.
 
 // Finally, correct the code to fix the problem
 
-// =============> write your new code here
+function square(num) {
+    return num * num;
+}