redlevin的专栏

<el-upload ref="voucherUpload" action="#" accept="image/jpeg,image/gif,image/png" :http-request="onUploadImageRequest" :on-remove="onUploadRemove" :on-success="onUploadSuccess" :before-upload="voucherBeforeUpload"> .

1、v-model 2、.sync https://www.jianshu.com/p/aed4dde203f2