Arrays in JavaScript

PranavTrip · web-flow · commit c9e9410ddfea · 2021-05-21T20:10:10.000+05:30
diff --git a/arrays.js b/arrays.js
@@ -0,0 +1,47 @@
+// Arrays in JavaScript
+let arr1 = [2, 3, 1, 56, 21, 32, 100, 55, 45, 34, 43];
+// let arr2 = new Array(5);
+let arr2 = ["new", "old", "oldest", "latest"];
+
+// Length of an array
+console.log("Length of array 1 is " + arr1.length);
+console.log("Length of array 2 is " + arr2.length);
+
+// Searching an element
+console.log(arr1.indexOf(56));
+
+// Sorting an array
+// Sorting in Ascending order
+let sortedArray = arr1.sort((a, b) => a - b);
+console.log(sortedArray);
+// Sorting in Desceding order
+let sortedArray2 = arr1.sort((a, b) => b - a);
+console.log(sortedArray2);
+
+// Reversing an array
+let reversedArray = arr1.reverse();
+console.log(reversedArray);
+
+// Concatenating two arrays
+let concatenatedArray = arr1.concat(arr2);
+console.log(concatenatedArray);
+
+// Inserting an element in an array
+// Inserting an element at the end of an array
+let newArr = arr2.push("Fruits");
+console.log(arr2);
+// Inserting at the beginning of an array
+let newArr1 = arr1.unshift("Fruits");
+console.log(arr1);
+
+// Deleting an element from an array
+// Deleting from last
+let newArr3 = arr2.pop();
+console.log(arr2);
+// Deleting from beginning
+let newArr4 = arr1.shift();
+console.log(arr1);
+
+// Splicing in an array
+let splicedArray = arr1.splice(56);
+console.log(arr1);
