What Are JavaScript Keywords? Keywords are reserved words in JavaScript that cannot use to indicate variable labels or function names. There are a total of 63 keywords that JavaScript provides.

JavaScript is often used together with Java. You should avoid using some Java objects and properties as JavaScript identifiers: JavaScript can be used as the programming language in many applications. In addition you should avoid using the name of all HTML event handlers.

Feb 1, 2025 · Understanding JavaScript keywords is crucial for writing clean and effective code. This guide covered the most commonly used keywords with examples. Keep practicing, and you'll master JavaScript in no time!

JavaScript Keywords. Keywords are reserved words that are part of the syntax in the programming language. For example, const a = 'hello'; Here, const is a keyword that denotes that a is a constant. Keywords cannot be used to name identifiers. Here is the list of keywords available in JavaScript.

JavaScript statements often start with a keyword to identify the JavaScript action to be performed. Our Reserved Words Reference lists all JavaScript keywords. Here is a list of some of the keywords you will learn about in this tutorial: JavaScript keywords are reserved words. Reserved words cannot be used as names for variables.

JavaScript keywords: definition, list, and examples. JavaScript keywords are reserved words that cannot be used as variable or function names due to their special significance in the language. For example:

Feb 24, 2025 · JavaScript provides a set of reserved keywords that are the part of syntax in the JavaScript language. JavaScript’s keywords are used to perform actions in the program. For example, the let keyword tells the browser to create a variable: let x = 10; Here, let is a keyword that indicates that x is the name of a variable that stores a value 10.

Feb 1, 2024 · This non-exhaustive glossary highlights and discusses key concepts related to JavaScript. Reading the glossary will likely provide the most benefit for programmers who are at least somewhat comfortable using JavaScript but still get confused by some aspects of the language or its ecosystem.

May 18, 2022 · Keywords in JavaScript are a set of reserved words that cannot be used as names of functions, labels, or variables as they are already a part of the syntax of JavaScript. Each of the keywords has its own meaning. They are generally used in executing internal operations. Some of the keywords are listed below.

Jan 27, 2025 · Keywords in JavaScript are reserved words that have special meanings to the language’s syntax. They play a pivotal role in defining the structure and behavior of the code. It’s essential to understand these keywords to avoid conflicts and errors in your programs.