function handleCode (code, isWeb) { if (isWeb) { return code; } // 要插入的滚动条样式 const scrollbarStyle = ` `; // 将样式插入到标签内（如果存在） let modifiedHtml = code; if (/\s*<\/head\s*>/i.test(modifiedHtml)) { modifiedHtml = modifiedHtml.replace(/(\s*<\/head\s*>)/i, `${scrollbarStyle}$1`); } else { // 如果没有，直接插入到之后 modifiedHtml = modifiedHtml.replace('', `${scrollbarStyle}`); } return modifiedHtml } const useEventListener = (element, eventType, callback, useCapture = false) => { if (!element || !callback) return null; const handler = (event) => callback(event); element.addEventListener(eventType, handler, useCapture); return () => { element.removeEventListener(eventType, handler, useCapture); }; };