import Vue from 'vue'

export default 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()
      }
    })
  }
})
