Skip to content

readme.md

Latest commit

 

History

History
74 lines (61 loc) · 2.72 KB

readme.md

File metadata and controls

74 lines (61 loc) · 2.72 KB

Introduction to JavaScript

JavaScript is a versatile and powerful programming language commonly used in web development. It allows developers to create dynamic and interactive web pages.

  • Intro to JavaScript : Learn about the basics of JavaScript, including variables, data types, and operators.
    • Operators : Explore the different types of operators in JavaScript, such as arithmetic, comparison, and logical operators.
    • Variables : Understand how to declare and assign values to variables in JavaScript.
  • Data Types : Explore the different data types in JavaScript, such as strings, numbers, and booleans.
  • Data Structures : Discover built-in data structures like arrays, objects, maps, and sets.

Basics Practice: JavaScript Basics Practice

Data Types

JavaScript has several data types that can be divided into two categories: primitive and non-primitive.

Primitive Data Types

  1. String: Represents textual data. Example: "Hello, World!"
  2. Number: Represents numeric values. Example: 42
  3. Boolean: Represents logical values. Example: true or false
  4. Undefined: Represents a variable that has been declared but not assigned a value.
  5. Null: Represents the intentional absence of any object value.
  6. Symbol: Represents a unique and immutable value, often used as object keys.
  7. BigInt: Represents integers with arbitrary precision. Example: 1234567890123456789012345678901234567890n

Non-Primitive Data Types

  1. Object: Represents a collection of key-value pairs. Example: 
    const person = {
    name: "John",
    age: 30
};
  2. Array: Represents an ordered list of values. Example: 
    const numbers = [1, 2, 3, 4, 5];

Data Structures

JavaScript provides several built-in data structures to manage collections of data.

Arrays

Arrays are used to store multiple values in a single variable. They are zero-indexed and can contain elements of different data types.

const fruits = ["Apple", "Banana", "Cherry"];

Objects

Objects are used to store collections of key-value pairs. Keys are strings (or Symbols), and values can be any data type.

const car = {
    make: "Toyota",
    model: "Corolla",
    year: 2020
};

Maps

Maps are collections of key-value pairs where keys can be of any data type.

const map = new Map();
map.set("name", "Alice");
map.set("age", 25);

Sets

Sets are collections of unique values.

const set = new Set();
set.add(1);
set.add(2);
set.add(3);