eldialog添加拖拽功能

import Vue from 'vue'

Vue.directive('dialogDrag', {
  bind(el, binding, vnode, oldVnode) {
    const dialogHeaderEl = el.querySelector('.el-dialog__header')
    const dragDom = el.querySelector('.el-dialog')
    dialogHeaderEl.style.cursor = 'move'

    const sty = dragDom.currentStyle || window.getComputedStyle(dragDom, null)

    dialogHeaderEl.onmousedown = (e) => {
      const disX = e.clientX - dialogHeaderEl.offsetLeft
      const disY = e.clientY - dialogHeaderEl.offsetTop

      let styL, styT
      if (sty.left.includes('%')) {
        styL = +document.body.clientWidth * (+sty.left.replace(/\%/g, '') / 100)
        styT = +document.body.clientHeight * (+sty.top.replace(/\%/g, '') / 100)
      } else {
        styL = +sty.left.replace(/\px/g, '')
        styT = +sty.top.replace(/\px/g, '')
      }

      document.onmousemove = function(e) {  
        const l = e.clientX - disX
        const t = e.clientY - disY

        dragDom.style.left = `${l + styL}px`
        dragDom.style.top = `${t + styT}px`

        // 将此时的位置传出去
        // binding.value({x:e.pageX,y:e.pageY})
      }

      document.onmouseup = function(e) {
        document.onmousemove = null
        document.onmouseup = null
      }
    }
  }
})

  在directives目录中新建v-drag.js,将以上代码拷贝进去

  创建vdireactive.js

import drag from './v-drag';

export { drag };

index.js中代码如下

import Vue from 'vue';
import * as directives from '@/common/directives/vdirectives.js';
// 注册指令
Object.keys(directives).forEach(k => Vue.directive(k, directives[k]));

　　

在main.js中引入

import '@/common/directives'