Mar 21, 2023 · The "=>" symbol, also known as the equals greater than symbol or hashrocket, is a shorthand notation for defining functions in JavaScript. It is used to create a new type of …

let hello = () => "Hello World!"; This works only if the function has only one statement. If you have parameters, you pass them inside the parentheses: If you have only one parameter, you can …

Jun 20, 2017 · Arrow functions are a short syntax, introduced by ECMAscript 6, that can be used similarly to the way you would use function expressions. In other words, you can often use …

Jul 8, 2025 · There are two types of expressions: those that have side effects (such as assigning values) and those that purely evaluate. The expression x = 7 is an example of the first type. …

Jun 27, 2023 · JavaScript operators are special symbols that perform operations on variables and values, crucial for calculations and data manipulation. Arithmetic operators include +, -, *, and …

Jul 30, 2025 · JavaScript operators are symbols or keywords used to perform operations on values and variables. They are the building blocks of JavaScript expressions and can …

JavaScript Assignment Operators Assignment operators assign values to JavaScript variables. The Addition Assignment Operator (+=) adds a value to a variable.

Nov 19, 2024 · What Is !! in JavaScript and TypeScript? In simple terms, !! is a shorthand way to convert any value to a boolean. It’s a quick way to ensure you’re working with a true or false …

Apr 29, 2025 · Here are some common symbols and what they mean: == : Checks for equality between two values without considering their data type (loose equality). === : Checks for …

JavaScript includes operators same as other languages. An operator performs some operation on single or multiple operands (data value) and produces a result. For example, in 1 + 2, the + …