endOffset

endOffset refers to the position marker that indicates the end of a selection or a range within a text-based interface or data structure. It is often used in conjunction with a corresponding startOffset. Together, startOffset and endOffset define a contiguous segment of text. In many programming contexts, offsets are zero-indexed, meaning the first character of a string or document has an offset of 0. The endOffset value typically points to the position immediately after the last character included in the selection. For instance, if a selection spans characters from index 5 to index 10 (inclusive), the startOffset would be 5 and the endOffset would be 11, representing the position *after* the character at index 10.

This concept is fundamental in text editing, search functionalities, and accessibility features. When a user selects text, the underlying system often records these offset values to manage the selection. This information can then be used for operations such as copying, cutting, pasting, or applying formatting. In web development, the DOM (Document Object Model) uses offset values to represent ranges within the document, allowing JavaScript to manipulate selected text or create custom selection behaviors. Understanding endOffset is crucial for developers working with text manipulation and user interface interactions involving text selection.