import Vue from 'vue'

Vue.directive('loadmore', {
    bind(el, binding) {
        // 获取element-ui定义好的scroll盒子
        const SELECTWRAP_DOM = el.querySelector('.el-select-dropdown .el-select-dropdown__wrap')
        SELECTWRAP_DOM.addEventListener('scroll', function() {
            const CONDITION = this.scrollHeight - this.scrollTop === this.clientHeight;
            if (CONDITION == false) {
                binding.value()
            }
        })
    }
})