Learn the best methods to count properties in JavaScript objects. Discover Object.keys(), Object.getOwnPropertyNames(), and Reflect.ownKeys() with practical examples and performance comparisons.
Learn how to remove specific items from JavaScript arrays using splice(), filter(), and other methods. Complete guide with examples for both mutable and immutable operations.
Learn how to reload a web page using JavaScript with location.reload() and other methods. Complete guide covering cross-browser compatibility, best practices, and common solutions for developers.