mounted() {
var vm =this
 var imgHandler = async function(state) {
 if (state) {
 //button is clicked
 }
 }
 vm.$refs.newEditor.quill.getModule("toolbar").addHandler("image", imgHandler)
}

 mounted() {
 var vm =this
 var imgHandler = async function(image) {
 vm.addImgRange = vm.$refs.newEditor.quill.getSelection()
 if (image) {
  var fileInput = document.getElementById(vm.uniqueId) //隐藏的file文本ID
  fileInput.click() //加一个触发事件
 }
 }
 vm.$refs.newEditor.quill.getModule("toolbar").addHandler("image", imgHandler)
 }

 <div
 v-loading="imageLoading"
 element-loading-text="请稍等，图片上传中">
 <quill-editor
 ref="newEditor"
 :options="newOption"
 style="height: 200px; margin-bottom: 54px"
 v-model="editorContent"
 @change="editorChange">
 </quill-editor>
 <form action="" method="post" enctype="multipart/form-data" id="uploadFormMulti">
 <input style="display: none" :id="uniqueId" type="file" name="avator" multiple accept="image/jpg,image/jpeg,image/png,image/gif" @change="uploadImg('uploadFormMulti')"><!--style="display: none"-->
 </form>
 </div>

 uploadImg: async function(id) {
  var vm = this
  vm.imageLoading = true
  var formData = new FormData($('#' + id)[0])
  try {
  const url = await vm.uploadImgReq(formData)// 自定义的图片上传函数
  if (url != null && url.length > 0) {
  var value = url
  vm.addImgRange = vm.$refs.newEditor.quill.getSelection()
  value = value.indexOf('http') != -1 "图片增加失败")
  }
  document.getElementById(vm.uniqueId).value=''
  } catch ({message: msg}) {
  document.getElementById(vm.uniqueId).value=''
  vm.$message.warning(msg)
  }
  vm.imageLoading = false
 },

 import Quill from 'quill'
 import { ImageResize } from '../modules/ImageResize.js'
 Quill.register('modules/imageResize', ImageResize)