To learn JavaScript well, we need to understand the most basic knowledge, and to get familiar with the simplest way, let's also refer to the following categories:
Variables
Concept Variables in JavaScript are a dedicated memory area for storing values. We can use variables to store data types such as numbers, strings, objects, or arrays. An important point of variables...
Data Types
Concept Data type is a system of data types used to determine the type of data for a variable. Primitive Data Types JavaScript supports 6 primitive data types: Number: This data type is used to...
Comments
Concept Comments are an important part of writing and maintaining source code. They allow programmers to add information, explain the source code, and create notes to make the code more...
Operators
Concept Operators are used to perform calculations, compare values, and perform logical operations in source code. JavaScript supports various types of operators, including: Arithmetic operators...
Arithmetic
Concept In JavaScript programming, performing arithmetic operations is an important and fundamental part. By using operators and arithmetic functions in JavaScript, you can perform addition,...
Assignment
Concept Assignment is a fundamental and important part. It allows us to assign a value to a variable and manage data in a program. Assigning a Value to a Variable To assign a value to a variable in...
Function
Concept Function is an important and powerful concept. Functions allow us to reuse code, create independent blocks of code, and perform specific tasks. How to create and use a Function To create a...
HTML Communication
Concept Communicating with HTML (HTML Communication) is an important part of changing the content and attributes of components on a web page. JavaScript provides methods and APIs to access and...
Events
Concept Events are an important part of interacting with users and handling actions. JavaScript provides a convenient way to attach event handler functions to components on a web page. How to Use...
If Else
Concept The if else statement is an important part of condition checking and controlling the flow of a program. The if else statement allows us to perform different actions based on a condition....
Switch
Concept Switch is a control structure in the JavaScript programming language that allows you to test a variable or an expression against multiple different values and perform corresponding actions....
Comparisons
Concept In the JavaScript programming language, comparisons between values are an important part of the programming process. It plays a role in deciding the branching behavior to be performed. Equal...
Scope
Concept Scope is an important concept to understand how variables and functions are accessed and used in your code. Scope determines the visibility and accessibility of variables, while helping to...