2.js committed

Author: carlosyabreu

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

@@ -1,20 +1,41 @@
 
 // Predict and explain first BEFORE you run any code...
-
 // this function should square any number but instead we're going to get an error
-
 // =============> write your prediction of the error here
 
-function square(3) {
-    return num * num;
-}
+/**
+ * Prediction:
+ * The function parameter is incorrectly defined as a numeric literal 3 instead of a parameter name. This will cause a syntax error because JavaScript function parameters must be valid identifiers (variable names), not numbers.
+ */
+
+/** Original function:
+ *
+ * function square(3) {
+ *  return num * num;
+ * }
+ */
+
 
 // =============> write the error message here
+/** 
+ * Error message:
+ * Uncaught SyntaxError: Unexpected number
+ */
 
 // =============> explain this error message here
+/** Explanation:
+ * In JavaScript, when defining a function, the parameters must be valid variable names (like num, x, value, etc.). Using a literal number like 3 as a parameter is invalid syntax because:
+ * Parameters act as placeholders for values that will be passed when the function is called
+ * Numbers can not be used as variable names in JavaScript
+ * The parser expects a valid identifier in the parameter declaration, not a numeric literal
+ */
 
 // Finally, correct the code to fix the problem
-
 // =============> write your new code here
 
+function square(num) {
+    return num * num;
+}
+
+console.log(square(3));