js 監聽事件

Jquery捲軸監聽

const scrollContainer = document.getElementById('ticket-records');
scrollContainer.addEventListener('scroll', () => {
    if (scrollContainer.scrollHeight - scrollContainer.scrollTop === scrollContainer.clientHeight) {
        console.log('捲軸到達底部！');
        // 在這裡執行到達底部時的操作

    }
    if (scrollContainer.scrollTop === 0) {
        console.log('捲軸到達頂部！');
        //獲取聊天曆史訊息
    }
})