一日一命令: find查找文件命令2

This script appears to be a JavaScript function that manipulates text display and overflow in HTML elements. It includes various utility functions to convert array-like objects to arrays, spread non-iterable instances, and calculate the number of lines of text an element contains. The core functionality provided by the script is to truncate text content within an element and append an ellipsis or a specified HTML fragment if the text overflows the element's bounds.

The textOverflow function is the primary function that checks whether an HTML element's content needs to be truncated based on either a specified number of lines (lineClamp) or the element's height in comparison to its scrollable content height. It attempts to find the last visible node and character index that fits within the defined constraints, then truncates the content and appends the specified HTML or an ellipsis, preserving a certain number of child nodes at the end if required.

Another key function, computeLineNum, calculates the number of lines an element's content spans using the element's offsetHeight and computed line height. The removeAllChild and setNewFrag functions are used to clear an element's content and set a new content fragment, respectively.

The __setDesc function seems to be related to setting the description text of an element, possibly for a sharing feature or similar functionality. It handles encoding issues, supports different types of content display, and applies styles based on the content's type or the presence of certain data attributes. It involves parsing and sanitizing the content, possibly removing certain links, and encoding emojis.

The script also includes logic to handle specific item display types (itemShowType), such as immersive or share notice styles, and it configures text overflow behavior accordingly. It finally sets up the __setDesc function for global access if it is not already defined, and it executes the function with various conditions based on the presence of different types of content or configuration values.

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