Learning Center - javascript

conditional_statementst

Anonymous (anonymous@undisclosed.example.com) — 2025-02-01T23:09:54+00:00

Conditional Statements in JS Conditional Statements Example: let time = 18; if (time < 12) { console.log("Good morning!"); } else if (time < 18) { console.log("Good afternoon!"); } else { console.log("Good evening!"); }

datatypes

Anonymous (anonymous@undisclosed.example.com) — 2025-02-01T23:09:01+00:00

Data Types in JS Data Types JavaScript supports various data types: * String: Text values (e.g., “Hello”) * Number: Numeric values (e.g., 42) * Boolean: True or false * Object: Key-value pairs * Array: Ordered collections Example: let isActive = true; let items = ["apple", "banana", "cherry"]; let person = { name: "Bob", age: 30 }; console.log(isActive, items, person);

dom_manipulation

Anonymous (anonymous@undisclosed.example.com) — 2025-02-01T23:11:39+00:00

DOM Manipulation in JS Selecting Elements let heading = document.querySelector("h1"); console.log(heading.textContent); Event Listeners document.querySelector("button").addEventListener("click", () => { alert("Button clicked!"); });

functions

Anonymous (anonymous@undisclosed.example.com) — 2025-02-01T23:10:50+00:00

Functions in JS Function Declaration function greet(name) { return `Hello, ${name}!`; } console.log(greet("Alice"));

getting_started

Anonymous (anonymous@undisclosed.example.com) — 2025-02-01T23:08:05+00:00

Getting Started with JS Setting Up Your Environment To start coding in JavaScript, you need the following tools: Web Browser: Modern browsers like Chrome, Firefox, or Edge. Text Editor/IDE: VS Code, Sublime Text, or any editor of your choice. Writing Your First Script

introduction

Anonymous (anonymous@undisclosed.example.com) — 2025-02-01T23:06:51+00:00

Introduction to JavaScript JavaScript is a versatile, high-level programming language commonly used to create interactive effects within web browsers. It is one of the core technologies of the web, alongside HTML and CSS. Why Learn JavaScript? Popularity

loops

Anonymous (anonymous@undisclosed.example.com) — 2025-02-01T23:10:17+00:00

Loops in JS Loops For Loop: for (let i = 0; i < 5; i++) { console.log(i); } While Loop: for (let i = 0; i < 5; i++) { console.log(i); }

objects_and_arrays

Anonymous (anonymous@undisclosed.example.com) — 2025-02-01T23:11:16+00:00

Objects and Arrays in JS Objects let car = { brand: "Tesla", model: "Model 3", year: 2021, drive() { console.log("Driving..."); } }; console.log(car.brand); car.drive(); Arrays let fruits = ["apple", "banana", "cherry"]; fruits.push("date"); console.log(fruits);

operators

Anonymous (anonymous@undisclosed.example.com) — 2025-02-01T23:09:27+00:00

Operators in JS Operators Common operators: * Arithmetic +, -, *, /, %' * Assignment =, +=, -= * Comparison ==, ===, !=, <, >

promises

Anonymous (anonymous@undisclosed.example.com) — 2025-02-02T19:02:33+00:00

Promises in JS Promises let promise = new Promise((resolve, reject) => { let success = true; if (success) { resolve("Operation successful"); } else { reject("Operation failed"); } }); promise .then(response => console.log(response)) .catch(error => console.log(error));

sidebar

Anonymous (anonymous@undisclosed.example.com) — 2025-02-09T20:49:48+00:00

* Introduction to JS * Getting Started with JS * Variables in JS * Data Types in JS * Operators in JS * Conditional Statements in JS * Loops in JS * Functions in JS * Objects and Arrays in JS * DOM Manipulation in JS * Promises in JS

variables_in_js

Anonymous (anonymous@undisclosed.example.com) — 2025-02-01T23:08:33+00:00

Variables in JS Variables store data values. Use let, const, or var to declare variables. let name = "Alice"; const age = 25; var country = "USA"; console.log(name, age, country);