js 监听事件

Jquery滚动条监听

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
    }
})