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<>js监听页面滚动
在项目中要实现查看分页加载的列表数据时，尤其是移动端，经常有下滑到底部加载更多的场景，可以通过滚动监听来实现。
代码如下：
window.addEventListener('scroll', this.handleScroll, true) handleScroll () {
let scrollTop = document.getElementsByClassName('滚动的元素')[0].scrollTop;
console.log('【滚动距离】', scrollTop); let ch =
document.getElementsByClassName('strategy-box')[0].clientHeight;
console.log('【可视区域】', ch); let sh =
document.getElementsByClassName('strategy-box')[0].scrollHeight;
console.log('【滚动条高度】', sh); /*scrollTop + ch = sh*/ }
稍稍解释：
addEventListener监听滚动，绑定触发函数handleScroll，执行事件代码。
滚动距离scrollTop + 可视区域高度ch = 总高度sh
意义：当滚动距离scrollTop + 可视区域高度ch = 总高度sh时，则滚动条滚动到底部，可以执行相关事件代码，如列表滚动到底部自动加载更多等。
end
比较笼统简单，如果对你有帮助，记得点赞噢（~~）
