NW-ITP |Mohammed Alzaki | Module-Structuring-and-Testing-Data| Sprint2 | week4

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

@@ -4,10 +4,19 @@
 // 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;
-}
+} */
 
 // =============> write your explanation here
+// An error occured => SyntaxError: Identifier 'str' has already been declared
+//because in javascript we cant declare a variable more than once within scope .
+
 // =============> write your new code here
+function capitalise(str) {
+  str = `${str[0].toUpperCase()}${str.slice(1)}`;
+   return str;
+ }
+
+ console.log(capitalise("cool"))

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

@@ -4,17 +4,30 @@
 // =============> 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(decimalNumber);
+console.log(decimalNumber); */
 
 // =============> write your explanation here
+//The function convertToPercentage(decimalNumber) accepts a parameter decimalNumber
+//Inside the function, ywe have decimalNumber redeclared using const decimalNumber = 0.5;, which creates a conflict
+// Finally, correct the code to fix the problem
+//we should remove the redeclaration of decimalNumber inside the function. Instead, use the parameter directly.and then
+//pass a decimal number as input => 0.5 in the function call
 
 // Finally, correct the code to fix the problem
 // =============> write your new code here
+
+function convertToPercentage(decimalNumber) {
+  const percentage = `${decimalNumber * 100}%`;
+  return percentage;
+}
+
+const result = convertToPercentage(0.5); 
+console.log(result); // Output => "50%"