Understanding data types is fundamental in programming as they determine the kind of operations that can be performed on the data and how the data is stored in memory. This blog will cover the basics of primitive and complex data types, as well as type conversion and type coercion in JavaScript.
Primitive data types are the most basic kinds of data types. In JavaScript, there are six primitive data types:
A string is a sequence of characters used to represent text. Strings can be enclosed in single quotes (' '), double quotes (" "), or backticks ( ).
let greeting = "Hello, world!";
let name = 'John Doe';
let message = `Welcome, ${name}!`;
The number data type represents both integer and floating-point numbers.
let integer = 42;
let floatingPoint = 3.14;
A boolean represents one of two values: true or false.
let isJavaScriptFun = true;
let isTired = false;
null is a special value that represents "no value" or "nothing".
let emptyValue = null;