
JavaScript Comparison and Logical Operators - W3Schools
Comparison and Logical operators are used to test for true or false. Comparison operators are used in logical statements to determine equality or difference between variables or values. …
What does the !! (double exclamation mark) operator do in JavaScript …
!! is not an operator. It's just the ! operator twice. @schabluk, for the record, order of operations is the reason !!5/0 produces Infinity rather than true, as produced by Boolean(5/0). !!5/0 is …
What is JavaScript? - GeeksforGeeks
Nov 29, 2024 · JavaScript includes primitive data types such as Number, String, Boolean, Null, Undefined, and Symbol. It also has non-primitive data types like Array, Object, and Function.
Strict equality (===) - JavaScript | MDN
Mar 13, 2025 · The strict equality (===) operator checks whether its two operands are equal, returning a Boolean result. Unlike the equality operator, the strict equality operator always …
What is JavaScript? - Learn web development - MDN
Apr 15, 2025 · In this article we will look at JavaScript from a high level, answering questions such as "What is it?" and "What can you do with it?", and making sure you are comfortable with …
JavaScript Comparison Operators - GeeksforGeeks
Nov 21, 2024 · JavaScript comparison operators are essential tools for checking conditions and making decisions in your code. 1. Equality Operator (==) The Equality operator is used to …
What is JavaScript - W3Schools.com
JavaScript is the Programming Language for the Web. JavaScript can update and change both HTML and CSS. JavaScript can calculate, manipulate and validate data.
An Introduction to JavaScript
Aug 8, 2022 · JavaScript was initially created to “make web pages alive”. The programs in this language are called scripts. They can be written right in a web page’s HTML and run …
Expressions and operators - JavaScript | MDN - MDN Web Docs
Apr 3, 2025 · The operator operand form is called a prefix unary operator, and the operand operator form is called a postfix unary operator. ++ and -- are the only postfix operators in …
JavaScript Tutorial - W3Schools
JavaScript is the programming language of the Web. JavaScript is easy to learn. This tutorial will teach you JavaScript from basic to advanced. With our "Try it Yourself" editor, you can edit the …
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