js 监听事件

Jquery滚动条监听

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const scrollContainer = document.getElementById('ticket-records'); scrollContainer.addEventListener('scroll', () => {     if (scrollContainer.scrollHeight - scrollContainer.scrollTop === scrollContainer.clientHeight) {         console.log('滚动条到达底部！');         // 在这里执行到达底部时的操作       }     if (scrollContainer.scrollTop === 0) {         console.log('滚动条到达顶部！');         //获取聊天历史消息     } })