how does vue register a global scrolling event to determine that the scroll bar scrolls to the bottom and executes the event?
how does vue register a global scrolling event to determine that the scroll bar scrolls to the bottom and executes the event?
ide/custom-directive.html" rel=" nofollow noreferrer "> learn about
you can customize a scroll instruction and do scroll judgment processing under this instruction method. On the
page, you only need v-custom instruction name =" method "
create listeners when a global component is created
created() {
window.addEventListener('scroll', this.doSomething);
},
destroyed() {
window.removeEventListener('scroll', this.doSomething);
}you can listen to scrolling events in root vue, and then provide interfaces to other components to add listeners:
// APP.vue vue
const onScrollListeners = []
// this.$addOnScrollListener , $removeOnScrollListener
Vue.prototype.$addOnScrollListener = listener=> onScrollListeners.push(listener)
Vue.prototype.$removeOnScrollListener = listener=> onScrollListeners.splice(onScrollListeners.indexOf(listener)
window.onscroll = ()=> {
if(xxxx){ //
onScrollListeners.forEach(listener=>listener())
}
}
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