complete correction

Author: pathywang

Sprint-1/3-mandatory-interpret/1-percentage-change.js

@@ -21,10 +21,12 @@ console.log(`The percentage change is ${percentageChange}`);
 
 // e) Describe what the expression Number(carPrice.replaceAll(",","")) is doing - what is the purpose of this expression?
 
-//a: There are three function calls, which are: Number(...), replaceAll(...) and console.log(...)
-//   Function call lines: 1. carPrice = Number(carPrice.replaceAll(",", ""));
-//                        2. priceAfterOneYear = Number(priceAfterOneYear.replaceAll("," ""));
-//                        3. console.log(`The percentage change is ${percentageChange}`);
+//a: There are five function calls, which are: Number(...), replaceAll(...) and console.log(...)
+//   Function call lines: 1. (carPrice.replaceAll(",", ""));
+//                        2.  Number(carPrice.replaceAll(",", ""));
+//                        3. Number(priceAfterOneYear.replaceAll("," ""));
+//                        4. (priceAfterOneYear.replaceAll("," ""));
+//                        5. console.log(`The percentage change is ${percentageChange}`);
 
 //b: priceAfterOneYear = Number(priceAfterOneYear.replaceAll("," "")) has an error,SyntaxError: Unexpected string
 //    missing a comma between the arguments of replaceAll.

Sprint-1/3-mandatory-interpret/2-time-format.js

@@ -35,7 +35,7 @@ console.log(result);
 // Answer d:it calculates the number of full minutes in the total movie length. so 8784-24=8760/60=146 minutes
 
 // Answer e: this builds a string representing the time in HH:MM:SS format, based on the movie length in seconds. The better name can be 
-//           formattedTime or timeString.
+//           movieDuration,movieDurationFormatted oe formattedMovieLength
 
 // Answer e: It will work for most large integers or large hours but it does not work well for time below 60 seconds like 37 seconds is 
 //           0:0:37 which can be considered unformatted. What is more, it does not handle negative numbers and does not pad numbers with zero.

Sprint-1/4-stretch-explore/chrome.md

@@ -24,17 +24,18 @@ the pop up box:chrome://new-tab-page says  Hello world!  i press ok button, retu
 <.'ping'
 Warning: Don’t paste code into the DevTools Console that you don’t understand or haven’t reviewed yourself. This could allow attackers to steal your identity or take control of your computer. Please type ‘allow pasting’ below and press Enter to allow pasting.
 allow pasting
->let myName = prompt("What is your name?");
-the pop up box:chrome://new-tab-page says, i ignore blue box just press cancel,
-<.console.log("Your name is:", myName);
-VM255:2 Your name is: null
-undefined
->let myName = prompt("What is your name?");
-in pop up box: chrome://new-tab-page says, i put my name'ping' in blue box then press ok
-<.console.log("Your name is:", myName);
-VM259:2 Your name is: ping
-undefined
-The value returned from prompt() is stored in the variable myName. The pop up box pauses the JS execution until i press the button either'cancel' or put my name before press'OK'.
+The value returned from prompt() is stored in the variable myName.
+The pop-up box pauses JavaScript execution until the user responds by either:
+
+typing a value and pressing OK → returns the input string, or
+
+pressing Cancel → returns null.
+This return value can then be used in the program, for example:
+
+console.log("Your name is:", myName);
+
+
+In some Chrome setups, I may need to grant permissions to allow pop-ups for prompt to work properly in DevTools.