手写题1:代码:class EventQueue { constructor() { this.queue = []; } // 添加事件，支持链式调用 addEvent(event, priority = 0) { this.queue.push({ event, priority }); return this; } // 执行事件，按照优先级排序 executeEvents() { // 按照优先级从高到低排序 this.queue.sort((a, b) => b.priority - a.priority); // 执行事件 this.queue.forEach(item => { item.event(); }); // 清空队列 this.queue = []; return this; } } const eq = new EventQueue(); eq.addEvent(() => console.log('Event 1'), 1) .addEvent(() => console.log('Event 2'), 3) .addEvent(() => console.log('Event 3'), 2) .executeEvents();