Array Reduce

Author: ShubhamSKadam

7_Arrays_in_detail/Arrays.md

@@ -167,3 +167,27 @@ numbers.sort((a, b) => b - a);
 console.log(numbers); // [ 12, 8, 5, 4, 1 ]
 ```
 
+#### Some and Every
+
+```js
+const array = [1, 2, 3, 4, 5];
+
+// Array Some => returns true if atleast one element passes the test
+console.log(array.some((number) => number > 5)); // false
+
+// Array Every => return true if all elements pass the test
+console.log(array.every((number) => number > 0)); // true
+```
+
+#### Array Reduce
+
+```js
+// Array Reduce
+
+const groceryList = [29, 12, 45, 35, 87, 110];
+
+const total = groceryList.reduce((total, price) => total + price, 0);
+
+console.log(total); // 318
+```
+

7_Arrays_in_detail/Arrays_3.js

@@ -26,16 +26,32 @@
 // Array sort => Alphabetically,
 // doesn't sort numbers
 // This sort method mutates the original array
-const names = ["Shubham", "Aditya", "Divyanshi", "Samarth"];
-names.sort();
-console.log(names);
+// const names = ["Shubham", "Aditya", "Divyanshi", "Samarth"];
+// names.sort();
+// console.log(names);
 
-const numbers = [4, 12, 8, 5, 1];
+// const numbers = [4, 12, 8, 5, 1];
 
 // Ascending order
-numbers.sort((a, b) => a - b);
-console.log(numbers);
+// numbers.sort((a, b) => a - b);
+// console.log(numbers);
 
 // Descending order
-numbers.sort((a, b) => b - a);
-console.log(numbers);
+// numbers.sort((a, b) => b - a);
+// console.log(numbers);
+
+// const array = [1, 2, 3, 4, 5];
+
+// Array Some => returns true if atleast one element passes the test
+// console.log(array.some((number) => number > 5)); // false
+
+// Array Every => return true if all elements pass the test
+// console.log(array.every((number) => number > 0)); // true
+
+// Array Reduce
+
+const groceryList = [29, 12, 45, 35, 87, 110];
+
+const total = groceryList.reduce((total, price) => total + price, 0);
+
+console.log(total); // 318