Queryvalues

Queryvalues refers to the components of a URL that are passed as key-value pairs. These values are appended to the URL after a question mark, and each pair is separated by an ampersand. For example, in the URL "https://www.example.com/search?q=keyword&page=2", "q=keyword" and "page=2" are query values. The "q" and "page" are the keys, and "keyword" and "2" are the corresponding values.

Query values are a common method for passing data from a client to a server. They are often used in web applications for tasks such as filtering search results, specifying parameters for an API request, or tracking user activity. Since query values are part of the URL, they are visible to the user and can be bookmarked or shared. However, they are not suitable for sensitive information as they can be easily intercepted.

The structure of query values is standardized by URL encoding. This process ensures that characters that have special meaning in URLs, such as spaces or ampersands, are represented in a way that can be transmitted correctly. For instance, a space is typically encoded as "%20". Web browsers and server-side programming languages provide built-in functions to encode and decode these values, making it straightforward to work with them. Understanding query values is fundamental for web development and for analyzing how web applications function.