The Language of the Web Keywords: JavaScript tutorial, what is JS, learn JavaScript for beginners, JavaScript basics What is JS? JavaScript (JS) is a high-level, interpreted programming language that brings interactivity and dynamic features to websitesHow Does a Computer Work? Understanding the Brain of Your Machine – 804. While HTML handles structure and CSS controls design,...

Variables in JavaScript Keywords: JavaScript variables, var let const, JavaScript basics What are Variables? Variables are containers that store data for later use. Example: javascriptCopyEditlet name = "Ali"; const age = 25; var country = "Pakistan"; Three Ways to Declare Variables Keyword Scope Reassignment Hoisting Use Case var Function Yes Yes Legacy code let Block Yes...

JavaScript data types, JavaScript string number boolean object Primitive Data Types Non-Primitive Data Types javascriptCopyEditlet person = { name: "Ali", age: 25 }; javascriptCopyEditlet fruits = ["apple", "banana"]; javascriptCopyEditfunction greet() { console.log("Hi!"); } Type Conversion Implicit: javascriptCopyEditconsole.log("5" + 2); // "52" Explicit: javascriptCopyEditNumber("5"); // 5 String(123); // "123" typeof Operator javascriptCopyEdittypeof "Hello"; // string typeof 42;...

Keywords: JavaScript functions, JavaScript basics, create function JavaScript What is a Function? A reusable block of code for performing a task. Example: javascriptCopyEditfunction greet(name) { return `Hello, ${name}`; } console.log(greet("Sara")); Types of Functions javascriptCopyEditfunction add(a, b) { return a + b; } javascriptCopyEditconst multiply = function(a, b) { return a * b; }; javascriptCopyEditconst divide =...

Keywords: JavaScript if else, JavaScript conditional statements If-Else javascriptCopyEditlet age = 18; if (age >= 18) { console.log("Adult"); } else { console.log("Minor"); } Else If javascriptCopyEditif (score >= 90) { console.log("A"); } else if (score >= 75) { console.log("B"); } else { console.log("C"); } Switch Statement javascriptCopyEditlet day = "Monday"; switch(day) { case "Monday": console.log("Start of...