this.$forceUpdate()详细场景:对象里面的属性开始没有定义，后期加上的
// 删除视频deleteVideo (index) {// 清空传递后端绑定的值 及 页面显示的值this.videoUrl[`video${index + 1}`] = nullthis.uploadVideoIndex = -1// 坑：需要强制更新视图，否则视图没变化this.$forceUpdate()}, computed: {...mapState(['isUseLottie']),// 储存图片url的地址，处理图片显示顺序imgUrl () {let imgUrl = {}this.imgArr.map((item, index) => {imgUrl[`img${index + 1}`] = null})return imgUrl},// 视频urlvideoUrl () {let videoUrl = {}this.videoArr.map((item, index) => {this.$set(videoUrl, `video${index + 1}`, null)})return videoUrl},// 物料urlmaterialUrl () {let materialUrl = {}this.imgArr.map((item, index) => {this.$set(materialUrl, `material${index + 1}`, null)})return materialUrl},// 素材类型下拉框数组materials() {let materialTypeArr = []this.configData.map(item => {if (this.adIdea.flow_type === item.flow_type) {let adForm = item.ad_formsadForm.map(item => {if (this.adIdea.ad_form === item.id) {materialTypeArr = item.materials}})}})// console.log(materialTypeArr, 'materialTypeArr....')return materialTypeArr},},