reviwing the content for updates and polishing my explanations

Author: Ebrahim-Moqbel

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

@@ -1,14 +1,17 @@
 // Predict and explain first...
 //  =============> write your prediction here
-//function capitalize will capitalise the first letter with index 0 
-// and will append the sliced string from index 1 which is the second letter
+/*
+I predict the function will throw a SyntaxError as the variable str has already been declared in the function parameter  
+function capitalize will capitalise the first letter with index 0 
+and will append the sliced string from index 1 which is the second letter
+*/
 
-// call the function capitalise with a string input
+//call the function capitalise with a string input
 
-// interpret the error message and figure out why an error is occurring
-//syntax Error :identifier the variabel has already been declared. 
-// As we can see the str variable has already been declared in the prameter of the function instead we just return the value 
-// The Error message is 
+// interpret the error message and figure out why an error is occurring :
+
+/* syntax Error :identifier the variabel has already been declared. 
+As we can see the str variable has already been declared in the prameter of the function instead we just return the value */
 
 // function capitalise(str) {
 //   let str = `${str[0].toUpperCase()}${str.slice(1)}`;
@@ -18,11 +21,11 @@
 
 
 // =============> write your explanation here 
-
-// =============> write your new code here
+/* syntax Error :identifier the variabel has already been declared. 
+As we can see the str variable has already been declared in the prameter of the function instead we just return the value */
 
 function capitalise(str) {
-return `${str[0].toUpperCase()}${str.slice(1)}`;
+return str[0].toUpperCase()+str.slice(1);
 
 }
 capitalise("ebrahim");

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

@@ -20,16 +20,16 @@
 
 
 // =============> write your explanation here
-//similar to the previous exercise where the variable decimal Number has already been declared in the parameter 
-// and already is a local variable which can't be declared again  
-//As the decimalNumber inside the function we can't print it using the console.log() as it has no power to the local scope
-//instead we can delete the second declaration and just leave the parameter as an input for the user which would be nicely work
-// Finally, correct the code to fix the problem
+/* The variable decimal Number has already been declared in the parameter 
+ and already is a local variable which can't be declared again causing a ReferenceError  
+As the decimalNumber inside the function we can't print it using the console.log() as it has no power to the local scope
+instead we can delete the second declaration and just leave the parameter as an input for the user 
+ Finally, correct the code to fix the problem */
 
 // =============> write your new code here
 function convertToPercentage(decimalNumber) {
   const percentage = `${decimalNumber * 100}%`;
-return percentage;
+ return percentage;
 }
 
 console.log(convertToPercentage(0.5));

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

@@ -4,7 +4,7 @@
 // this function should square any number but instead we're going to get an error
 
 // =============> write your prediction of the error here
-//The error might be accuring because the parameter can't be a number and should be a variable 
+//I predict the funciton will throw a SyntaxEror as the perametters sould be valid variables like names or identifiers with upholding to the variable naming convention and in this case a number found 
 
 // function square(3) {
 //     return num * num;
@@ -14,13 +14,16 @@
 //the Error is a syntax error: Unexpected number 
 
 // =============> explain this error message here
-// we can put a number or any argument when we call the number not when we shape it 
+/* The function was givin a number as its perameter where in JS only allows varaible names and usnig a number causes a SyntaxError
+ Also, the function was returning num*num where num is undefined causing a ReferenceError
+ */
 
 // Finally, correct the code to fix the problem
-function square(num) {
-    return num * num;
- }
 
 // =============> write your new code here
 
+function square(num) {
+    return num * num;
+ }
 
+console.log(square(25));