Basic JavaScript - Comments, Data Types, Variables

Topics:

1. Comments
2. Data Types
3. Variables

Comments

• Comments are lines of code that JavaScript will ignore. Comments are used to leave some notes to your future self and to other people who will later open your code.
• There are two ways to type comments in JS.
• // is used for inline comment.
• /**/ is used for multi line comment.
• /** */ is used for documentation

Data Types

• Data is anything that is meaningful to the computer. Like we have videos, texts, songs, etc. In general we can say a text a data type, we can't store a video in a text file or a text in a video file, they are different data types.
• JavaScript provides eight different data types which are undefined, null, boolean, string, symbol, bigint, number, and object.
• number - 1,2,3...
• strings - "abcd.."
• boolean - true, false
• etc

Variables

• Variables are similar to the x and y variables you use in mathematics but in computer we use variable to point to some value, means they are just a simple name referring at some value.
• In JavaScript we can define variable in different ways.

This is just a basic intro from my side, you can learn more from:

• https://dev.to/amritanshu/top-courses-to-learn-javascript-43ah