使el-table通过操控鼠标滚轮横向滚动

1.创建directive文件夹，里面创建directive.js文件

import Vue from 'vue';

Vue.directive('scroll-x',{
  inserted:function(el){
    let domClass = el.getAttribute('class')
    if(domClass.indexOf('el-table')<0){
      return false
    }
    const scrollDiv = el;
    if(scrollDiv==null){
      return false
    }
    scrollDiv.addEventListener('mousewheel', handler, false)
    const that = this
    function handler(event) {
      const detail = event.wheelDelta || event.detail;
      const moveForwardStep = 1;
      const moveBackStep = -1;
      let step = 0;
      if (detail < 0) {
        step = moveForwardStep * 100;
      } else {
        step = moveBackStep * 100;
      }
      let d = scrollDiv.querySelector('.el-table__body-wrapper')
      d.scrollLeft += step
    }
  }
})

2.在main.js中全局引入

import './directive/directives'
3.在vue页面中使用 v-scroll-x

<el-table

v-scroll-x

> </el-table>