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                ### [使用vue.js在頁面內組件監聽scroll事件的方法] **思路:**scroll在哪兒個組件內,就在獲取那個dom元素。網上好多思路是 ~~~ window.addEventListener("scroll",?function(){console.log('scrolling');}); ~~~ 這是監聽不到的!如果你整個網頁可以滑動,或許還可以試試! 對于像我這樣,只在頁面的內的一個div內要監聽的。 **實現代碼如下:** **第一步:滑動的組件外層的div加 ref="viewBox" 為了通過$refs獲取dom元素** ~~~ <!--設備列表--><div?class="deviceWrapper"?ref="viewBox"><mu-refresh-control?:refreshing="refreshing"?:trigger="trigger"?@refresh="refresh"/><div?class="demo-grid"><!--設備列表 手機一行兩列 pad一行4列--><mu-row><mu-col?v-for="device in devicesList"?width="50"?tablet="25"?desktop="25"><deviceCardView?:device-data="device""></devicelightCardView></mu-col></mu-row></div><p?class="bottomLine"?v-bind:class="{bottomLineVisible:isScroll}">---------------------我是有底線的---------------------</p></div> ~~~ **第二步:** ~~~ mounted()?{// 通過$refs獲取dom元素this.box?=?this.$refs.viewBox// 監聽這個dom的scroll事件this.box.addEventListener('scroll',?()?=>?{console.log(" scroll "?+?this.$refs.viewBox.scrollTop)//以下是我自己的需求,向下滾動的時候顯示“我是有底線的(類似支付寶)”this.isScroll=this.$refs.viewBox.scrollTop>0},?false)} ~~~ **ps:具體怎么做,看需求了。只要能打印出來.scrollTop就行了**
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