利用js判断页面是否滚动到了底部

代码实现：

<!DOCTYPE html>
<html>
<head>
    <title></title>
</head>
<body>
    <div class="d" style="height: 1000px;"></div>
<script>
    window.onscroll = function(){
        if(document.documentElement.scrollTop + document.documentElement.clientHeight == document.documentElement.scrollHeight){
            console.log("到底部了")
        }
    }
</script>
</body>
</html>

关键代码：

window.onscroll = function(){
    if(document.documentElement.scrollTop + document.documentElement.clientHeight == document.documentElement.scrollHeight){
        console.log("到底部了")
    }
}