Which characteristic is true of JavaScript?

JavaScript is a versatile programming language that can be executed on both the client side and the server side. This characteristic allows developers to create dynamic and interactive web applications that enhance user experience by operating in the user's web browser while also enabling server-side processing to manage data and application logic.

On the client side, JavaScript runs in the user's browser, allowing it to manipulate the Document Object Model (DOM), handle events, and interact with HTML and CSS. This is essential for creating responsive websites where changes can occur without the need to reload the page.

On the server side, JavaScript can be utilized, primarily through environments like Node.js, to build scalable network applications. This means that JavaScript is not limited to just web browsers; it can handle server-side logic, data storage, and integration with databases, making it a full-stack language.

This capacity to function on both ends of the web architecture is a key reason for its widespread use in modern web development. The other options incorrectly specify restrictions that do not reflect the current capabilities of JavaScript.