领导者的胆量从何处来

The provided script appears to be a JavaScript function intended to manage text overflow in HTML elements. It checks if given elements' content exceeds their display area and applies a text-overflow effect if necessary.

The function includes several helper methods to handle arrays and iterable objects, convert them to arrays, and perform operations to detect if text overflow should be applied. These operations include checking the number of lines of text and comparing it to the number of lines that should be displayed (lineClamp) and determining if the element's height is less than its scrollable content height.

If text overflow is needed, the function attempts to truncate the content and append an ellipsis or custom HTML to indicate that there is more content than currently visible. The script handles both plain text and HTML content, maintaining a portion of the original content as specified by a "tail number" if provided.

Additional utility functions are included to compute the number of lines in an element based on its computed line-height style, remove all child elements from a node, and set a new content fragment into an element.

The script also contains a method to set descriptions with specific formatting rules. It filters out unwanted links and content, supports emoji formatting, and handles different display types with the ability to expand truncated text in certain conditions.

Finally, the script includes conditional logic to apply these text overflow and formatting methods to different content types, such as video descriptions or text content, based on the presence of certain global variables.