Adding More practice code for JavaScript

Basics3.js

@@ -56,4 +56,18 @@ let finalResult = scores1
     .filter((score) => score % 2 == 0)
     .map((score) => score * 3)
     .reduce((sum, val) => sum + val, 0);
-console.log(finalResult);
+console.log(finalResult);
+
+//Sorting an Stirng Array
+let fruits = ["Banana", "Orange", "Apple", "Mango"];
+fruits.sort();
+console.log(fruits);
+//Reversing an String Array
+console.log(fruits.reverse());
+
+//Sorting an Number Array
+let numberSort = [10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 105];
+numberSort.sort((a, b) => a - b);
+console.log(numberSort);
+//Reversing an Number Array
+console.log(numberSort.reverse());  

Basics4.js

@@ -0,0 +1,46 @@
+//Working with Functions in Javascript
+function add(a, b) {
+    return a + b;
+}
+console.log(add(10, 20));
+//Working with Anonymous Functions
+let sub = function (a, b) {
+    return a - b;
+}
+console.log(sub(60, 20));
+
+//More Simplified Code
+let mul = (a, b) => a * b;
+console.log(mul(10, 20));
+
+//Working with Var.Let & Const
+//Var Scope Global & Function Scope
+var a = 10;
+console.log(a);
+function add() {
+    var a = 20;
+    console.log(a);
+}
+add();
+console.log(a);
+
+//Let Scope Global & Function Scope
+let b = 10; //let can be used only in global scope
+console.log(b);
+function sub() {
+    let b = 20;
+    console.log(b);
+}
+sub();
+console.log(b);
+
+//Const Scope Global & Function Scope
+const c = 10;
+console.log(c);
+function mul() {
+    const c = 20;
+    console.log(c);
+}
+mul();
+console.log(c);
+

Basics5.js

@@ -0,0 +1,45 @@
+//Working with Strings & its Methods
+var userName = "Sachin";
+console.log(userName);
+console.log(userName.length);
+console.log(userName.toUpperCase());
+console.log(userName.toLowerCase());
+console.log(userName.charAt(0));
+console.log(userName.indexOf("i"));
+console.log(userName.lastIndexOf("i"));
+console.log(userName.slice(2, 4));
+console.log(userName.substring(2, 4));
+console.log(userName.split("i"));
+
+let splitUserName = userName.split("i");
+console.log(splitUserName.length);
+
+//Finding the difference between two dates
+let date = '23';
+let nextDate = '30';
+let diff = parseInt(nextDate) - parseInt(date); //or date - nextdate;
+console.log(diff);
+//Convert String to Number
+diff.toString();
+console.log(diff);
+
+//Concatenation of Strings
+let welcomeMsg = userName + " Welcome to System";
+console.log(welcomeMsg);
+
+let val = welcomeMsg.indexOf("Welcome");
+console.log(val);
+
+//Write a program to find count of occurrences
+let count = 0;
+let str = "Welcome to System";
+for (let i = 0; i < str.length; i++) {
+    if (str[i] == "o") {
+        count++;
+    }
+}
+console.log(count);
+
+
+
+