For the final section for PR submission

Author: Jacknguyen4438

Sprint-2/implement/querystring.js

@@ -1,12 +1,20 @@
 function parseQueryString(queryString) {
   const queryParams = {};
-  if (queryString.length === 0) {
+
+  if (!queryString || queryString.length === 0) {
     return queryParams;
   }
-  const keyValuePairs = queryString.split("&");
 
-  for (const pair of keyValuePairs) {
-    const [key, value] = pair.split("=");
+  const pairs = queryString.split("&");
+
+  for (const pair of pairs) {
+    if (!pair) continue;
+
+    const [key, ...rest] = pair.split("=");
+    const value = rest.join("=");
+
+    if (!key) continue;
+
     queryParams[key] = value;
   }
 

Sprint-2/interpret/invert.js

@@ -10,20 +10,33 @@ function invert(obj) {
   const invertedObj = {};
 
   for (const [key, value] of Object.entries(obj)) {
-    invertedObj.key = value;
+    invertedObj[value] = key;
   }
 
   return invertedObj;
 }
+console.log(invert({ a: 1 }));
+console.log(invert({ a: 1, b: 2 }));
+console.log(invert({ a: 1, b: 2 }));
 
 // a) What is the current return value when invert is called with { a : 1 }
+// the current output value of this invert is {key:1}.
 
 // b) What is the current return value when invert is called with { a: 1, b: 2 }
+/*  the current output value of this invert is {key:2} because 
+instead of accessing the [key] variable inside the condition parameter for store key for each loop, the code in line 13 instead adding .key behind and the system
+interpret as string literal so each loop is overwrite the previous key value.
+.*/
 
 // c) What is the target return value when invert is called with {a : 1, b: 2}
+// is also the same with { a: 1, b: 2 } because is overwrite the previous key each loop.
 
 // c) What does Object.entries return? Why is it needed in this program?
+/* Object.entries return deconstruct object key and value pair into individual item in an array. 
+This is very important because since object is are not iterable, this help by deconstructing object into array when we try to loop each key and value pair*/
 
 // d) Explain why the current return value is different from the target output
-
+/*
+Because inside the for of loop, the invertedObj output assign they keys first instead of value for each loop. 
+*/
 // e) Fix the implementation of invert (and write tests to prove it's fixed!)