mec-cloud_-intelligent-manufacturing_client/zkqy-ui/src/utils/directives.js

export default {
  scroll: {
    bind(el, binding) {
      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) {
          binding.value()
        }
      })
    }
  }
}