Webbläsarskriptkörning

Webbläsarskriptkörning, often referred to as browser scripting, is the process by which web browsers interpret and execute code embedded within a web page. This code is typically written in scripting languages like JavaScript, but can also include other languages supported by the browser. When a user visits a web page, the browser downloads the HTML, CSS, and any associated scripts. The browser then parses the HTML to understand the page structure and renders it visually. Concurrently, it encounters script elements and executes the code within them.

This execution allows for dynamic content, interactivity, and enhanced user experiences. For example, scripts can be used to validate form inputs before submission, create animations, update content without a full page reload (AJAX), or display pop-up messages. The browser's script engine is responsible for interpreting the script's syntax, managing its execution context, and interacting with the Document Object Model (DOM) to manipulate the web page's content and structure. Security is a critical concern, and browsers implement various mechanisms, such as sandboxing, to prevent malicious scripts from accessing sensitive user data or harming the user's system. The performance of script execution can significantly impact page load times and responsiveness.