#chaicode
🏠 Story: "Doraemon and the Case of the Missing Gadget!"
One day, Nobita ran home crying because he had lost a secret gadget that Doraemon had given him! 😱
Now, it's up to Doraemon, Nobita, and friends to find it using JavaScript array methods!
1️⃣ push() – Listing Possible Locations
Doraemon and Nobita started listing places where the gadget could be.
let locations = [];
locations.push("Nobita's Room");
locations.push("School");
locations.push("Gian's House");
locations.push("Shizuka's Garden");
console.log(locations);
💡 push() adds elements to the end of an array.
2️⃣ pop() – Removing an Impossible Location
Nobita realized, "I didn’t go to Gian’s house today!" So they removed it.
jsCopyEditlocations.pop();
console.log(locations);
💡 pop() removes the last element from an array.
3️⃣ unshift() – Adding a Suspicious Place First
Doraemon suspected "Dekisugi’s Desk" because he saw Nobita there.
jsCopyEditlocations.unshift("Dekisugi’s Desk");
console.log(locations);
💡 unshift() adds elements to the beginning of an array.
4️⃣ shift() – Eliminating a Wrong Guess
Shizuka said, "It wasn't in my garden, I cleaned it this morning!"
jsCopyEditlocations.shift();
console.log(locations);
💡 shift() removes the first element from an array.
5️⃣ indexOf() – Checking if Nobita’s Room is on the List
Doraemon wanted to confirm if "Nobita's Room" was a location to check.
jsCopyEditconsole.log(locations.indexOf("Nobita's Room")); // Output: 0
💡 indexOf() finds the position of an item in an array.
6️⃣ includes() – Verifying a Location
Nobita asked, "Is my school on the list?"
jsCopyEditconsole.log(locations.includes("School")); // Output: true
💡 includes() checks if an array contains a specific value.
7️⃣ slice() – Checking the Top 2 Suspect Locations
Doraemon decided to prioritize checking the top 2 places.
jsCopyEditlet suspectLocations = locations.slice(0, 2);
console.log(suspectLocations); // ["Nobita's Room", "School"]
💡 slice() extracts a portion of an array without modifying it.
8️⃣ filter() – Finding the Most Likely Spot
Doraemon eliminated locations where the gadget couldn’t be.
jsCopyEditlet possibleLocations = locations.filter(place => place !== "Dekisugi’s Desk");
console.log(possibleLocations);
💡 filter() creates a new array with elements that match a condition.
9️⃣ map() – Assigning Search Tasks
Doraemon divided the search among friends.
jsCopyEditlet tasks = locations.map(place => `Search in ${place}!`);
console.log(tasks);
💡 map() transforms each element into something new.
🔟 find() – Identifying the Culprit!
Suddenly, they found the gadget in Suneo’s backpack!
jsCopyEditlet culprit = locations.find(place => place === "Suneo's Backpack");
console.log(`The gadget was in ${culprit}!`);
💡 find() returns the first matching element from an array.