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在scroll过程中判断某个DOM是否已经进入指定容器的可视区域
在scroll过程中判断某个DOM是否已经进入指定容器的可视区域
npm install dom-visible-observer
import visibleObserver from 'dom-visible-observer'
visibleObserver({
container,
el,
threshold,
show,
hide
})表示监听滚动的容器 默认是document
监听的DOM元素
差值 number 默认0
滚动容器时，当DOM进入容器可视区域时的回调
滚动容器时，当DOM未进入或已离开容器可视区域时的回调