因?yàn)閿?shù)據(jù)過多 簡(jiǎn)單節(jié)流

Vue.directive('loadmore', {

? bind (el, binding) {

// 獲取element-ui定義好的scroll盒子

constSELECTWRAP_DOM = el.querySelector('.el-select-dropdown .el-select-dropdown__wrap')

SELECTWRAP_DOM.addEventListener('scroll',function(){

constCONDITION =this.scrollHeight -this.scrollTop <=this.clientHeight

if(CONDITION) {

? ? ? ? binding.value()

? ? ? }

? ? })

? }