Spring Security 中自定义权限表达式

The script provided appears to be a JavaScript module used for handling text overflow in web content where a certain amount of text needs to be displayed, often with ellipses ("...") to indicate that there is more text available than what is being shown. It includes several utility functions for converting different iterable or array-like objects into arrays, as well as functions related to manipulating and assessing DOM elements for text overflow purposes.

The main function, textOverflow, checks if an HTML element's text content overflows its container and if so, it truncates the text and appends an ellipsis or custom HTML. It uses a binding object to determine how many lines of text should be shown (lineClamp) and the number of elements to retain at the end of the content (tailNum). The function handles both cases where the entire nodes need to be hidden and cases where only part of a text node needs to be hidden.

Supporting functions such as computeLineNum and removeAllChild are used to calculate the number of lines an element's text occupies and to clear an element's children, respectively. The getScaleByDom function seems to be related to computing the scale of font sizes between computed and specified values.

Additionally, the script contains functions for processing descriptions based on different types of content display, such as audio pages or text with embedded links, as indicated by the itemShowType. It replaces certain HTML tags for valid content and formats emoji characters. It also includes logic for setting content descriptions in the DOM, with special cases for certain item types and conditions, such as immersive styles or audio pages.

Finally, the script concludes with a condition that sets the description text based on various input variables, which are likely provided by the webpage environment. This includes different content types for videos, text, and other media, as well as an extData object that might contain additional data like a super vote ID.

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