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JavaScript

Data Types in JavaScript

Introduction to JavaScript
What is JavaScript? How it works? History of JavaScript
Basic Concepts in JavaScript
Variables Data Types Operators Control Flow
Functions and Data Structures
Functions Builtin functions Userdefined functions Parameters and Arguments Arrays Indexes and length Array methods
ObjectOriented JavaScript
Object and Properties Constructors Inheritance Prototype
DOM Manipulation
What is DOM? Accessing HTML elements with JavaScript Manipulating HTML elements with JavaScript Events and event handling
Asynchronous JavaScript
Callbacks Promises Async/await Asynchronous data loading AJAX
jQuery
What is jQuery? Selecting and manipulating HTML elements with jQuery jQuery events
Browser APIs
Working with Web Storage Location API Navigator API Geolocation API Canvas API
Expressions and Regular Expressions
Boolean expressions Regular expressions
Debugging and Testing JavaScript
Debugging basics Chrome Developer Tools Unit testing Testing frameworks
JavaScript Libraries and Frameworks
Introduction to libraries and frameworks React.js Angular.js Vue.js Node.js
Deploying JavaScript Applications
Deploying for the Web Hosting options
Ecmascript6 Features
Classes Arrow functions Promises Destructuring of Objects and Arrays Default parameters and Spread Operator
Security and Best Practices in JavaScript
Security basics Best practices for writing safe and maintainable JavaScript code Code optimization techniques
Conclusion
Recap of the course Next Steps.

Data Types

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In JavaScript, there are several types of data that you can work with. Understanding these types is essential to become proficient in JavaScript programming.

  1. Number: This represents numeric data such as integer or floating-point values.
  1. String: This represents a sequence of characters. You can use either single or double quotes to define a string.
  1. Boolean: This represents a logical value that can be either true or false.
  1. Undefined: This variable has been declared but has not yet been assigned a value.
  1. Null: This represents a variable with no value or an empty value.
  1. Object: This represents a unique entity in JavaScript, and it consists of properties and methods.
  1. Symbol: This represents a unique identifier that can be used as the key for object properties.
  1. BigInt: This represents integers of arbitrary length.

Understanding the different data types is essential, as it affects how you work with variables, use operators, and create functions. For example, you can’t perform arithmetic calculations with a string or concatenate a number with a boolean value. It’s also essential to note that JavaScript is a dynamically typed language, which means variables can change types at runtime.

March 25, 2023

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