Selektor

Selektor is a term used in computer science and software development as a name or generic label for a mechanism that identifies a subset of items within a data structure or document. The exact meaning and scope depend on the context, and there is no single universal standard for a product or spec known simply as “Selektor.”

In web development and styling, a selector is an expression that identifies elements in a document object model. CSS selectors specify elements by tag, class, or attribute, and can express relationships between elements with combinators; modern selectors include pseudo-classes and pseudo-elements. Selectors are used to apply style rules and to locate elements for scripting and automation.

In data processing and querying, selectors navigate hierarchical data. They may be part of query languages or templating systems, for example XML path languages like XPath, JSONPath, or domain-specific languages that resolve parts of a data structure without traversing it manually.

Software libraries and projects sometimes adopt the name Selektor as a brand or module that implements selector logic—parsing selector expressions and applying them to data collections. The feature set varies by implementation and typically emphasizes efficient identification of matching items.

Etymology and usage: the term derives from the word “selector,” and in many languages the cognate “selektor” is used to label components that perform selection. The concept is foundational across user interfaces, data querying, and templating.