Jul 20, 2025 · Find the first prime number in an array The following example returns the first element in the array that is a prime number, or undefined if there is no prime number.

Jul 10, 2025 · All properties and methods of Math are static. Note: Many Math functions have a precision that's implementation-dependent. This means that different browsers can give a different result. Even …

Jul 8, 2025 · This chapter describes JavaScript's expressions and operators, including assignment, comparison, arithmetic, bitwise, logical, string, ternary and more.

Aug 18, 2025 · At this point in the course, we discuss math in JavaScript — how we can use operators and other features to successfully manipulate numbers to do our bidding.

Jul 8, 2025 · This chapter documents all the JavaScript language operators, expressions and keywords.

Jul 8, 2025 · Programming languages all have built-in data structures, but these often differ from one language to another. This article attempts to list the built-in data structures available in JavaScript …

Jul 29, 2025 · If you are new to JavaScript, start with the guide. Once you have a firm grasp of the fundamentals, you can use the reference to get more details on individual objects and language …

Nov 7, 2025 · The JavaScript Guide shows you how to use JavaScript and gives an overview of the language. If you need exhaustive information about a language feature, have a look at the JavaScript …

Aug 26, 2025 · This chapter introduces the two most fundamental data types in JavaScript: numbers and strings. We will introduce their underlying representations, and functions used to work with and …

Oct 2, 2025 · JavaScript (JS) is a lightweight interpreted (or just-in-time compiled) programming language with first-class functions. While it is most well-known as the scripting language for Web …