map ,Filter and reduce method done

Author: Wcoder547

04_iterations/mapAndFilter.js

@@ -0,0 +1,72 @@
+// console.log("hello world");
+
+// const myNUmber = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10];
+
+// const total = myNUmber.filter((item) => item > 4);
+
+// console.log(total);
+
+// const newNums = [];
+// newNums.forEach((num) => {
+//   if (num > 4) {
+//     newNums.push(num);
+//   }
+// });
+// console.log(newNums);
+//======================Filter=============================
+// const myNUmber = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10];
+
+// const total = myNUmber.filter((item) => {
+//   return item + 10; //filter whi array return krta he ..
+// });
+
+// console.log(total);
+//=================MAP=====================
+const myNUmber = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10];
+
+// const total = myNUmber.map((item) => {
+//   return item * 10;
+// });
+// console.log(total); // creates new array.
+
+// const total = myNUmber
+//   .map((item) => item * 10)
+//   .map((item) => item + 1)
+//   .map((item) => item + 1)
+//   .filter((item) => item >= 40);
+// console.log(total); // creates new array.
+
+//=====================Reduce Method ==========================
+
+const arr1 = [1, 2, 3];
+// const result = arr1.reduce((acc, val) => {
+//   console.log(`acc value is ${acc} and value is ${val}`);
+//   return acc + val;
+// }, 0); //here 0 is the initial value ..
+
+// console.log(result);
+
+// const mytotal = arr.reduce((acc, val) => acc + val, 0); //shortest form
+// console.log(mytotal);
+
+const ShoppingCart = [
+  {
+    productName: "shirt",
+    price: 1500,
+  },
+  {
+    productName: "pent",
+    price: 3000,
+  },
+  {
+    productName: "Tie",
+    price: 500,
+  },
+  {
+    productName: "Coat",
+    price: 15000,
+  },
+];
+
+const priceToPay = ShoppingCart.reduce((acc, item) => acc + item.price, 0);
+console.log(`Your Total Bill Is ${priceToPay}`);