子组件:props { onSuccess: { type: Function, default: noop }}methods: { handleSuccess(res, rawFile) { this.onSuccess(res, file, this.uploadFiles); }}父组件使用:<el-upload class="avatar-uploader upload" :action="cloudUrl" :on-success="handleUrl">methods: { handleUrl(response, file, fileList) { }}假设不改变子组件的,父组件的增加额外参数:methods: { handleUrl(response, file, fileList, extra) { }}:on-success="handleUrl"应该怎么改传参?如果子组件用emit的话,父组件可以用...arguments代表旧的参数,用props传函数再用...arguments不行,$event也不行。求教 评论邀请回答
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