completed 1-key-errors

Author: libanj0161

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

@@ -1,13 +1,20 @@
 // Predict and explain first...
 //  =============> write your prediction here
-
+// it will take a string and turn the first letter into a capital.
 // call the function capitalise with a string input
 // interpret the error message and figure out why an error is occurring
-
+// SyntaxError: Identifier 'str' has already been declared - str cannot be used twice as a variable name.
 function capitalise(str) {
   let str = `${str[0].toUpperCase()}${str.slice(1)}`;
   return str;
 }
 
 // =============> write your explanation here
+// i've changed the variable name from str to result. This corrected the error and return result. 
 // =============> write your new code here
+function capitalise(str) {
+  let result = `${str[0].toUpperCase()}${str.slice(1)}`;
+  console.log("result",result);
+  return result;
+}
+capitalise("pear")

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

@@ -2,7 +2,7 @@
 
 // Why will an error occur when this program runs?
 // =============> write your prediction here
-
+// They have used the same variable name twice. This will cause an error. Also line 9 is not needed because the function takes a decimal as an argument. 
 // Try playing computer with the example to work out what is going on
 
 function convertToPercentage(decimalNumber) {
@@ -15,6 +15,14 @@ function convertToPercentage(decimalNumber) {
 console.log(decimalNumber);
 
 // =============> write your explanation here
+// SyntaxError: Identifier 'decimalNumber' has already been declared. 
+// ReferenceError: decimalNumber is not defined
 
 // Finally, correct the code to fix the problem
 // =============> write your new code here
+function convertToPercentage(decimalNumber) {
+  const percentage = `${decimalNumber * 100}%`;
+  console.log("percentage",percentage)
+  return percentage;
+}
+convertToPercentage(0.8)

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

@@ -4,17 +4,20 @@
 // this function should square any number but instead we're going to get an error
 
 // =============> write your prediction of the error here
-
+// You can't put a number value into an argument.
 function square(3) {
     return num * num;
 }
 
 // =============> write the error message here
-
+// SyntaxError: Unexpected number
 // =============> explain this error message here
-
+// It is not expecting a number to be in the function argument.
 // Finally, correct the code to fix the problem
 
 // =============> write your new code here
+function square(num) {
+    return num * num;
+}
 
-
+console.log("square",square(5))