vue父组件中获取子组件中的数据(实例讲解)

<FormItem label="上传头像" prop="image">   <uploadImg :width="150" :height="150" :name="'avatar'" size="150px*150px" ref="avatar"></uploadImg></FormItem> <FormItem label="上传营业执照" prop="businessLicence"> <uploadImg :width="350" :height="200" :name="'businessLicence'" size="350px*200px" ref="businessLicence"></uploadImg></FormItem>

/*  子组件*/<template>  <input type='file' @change="changeUrl" /></template><script>export default {  methods: {    changeUrl(e) {      this.$emit('changeUrl', e.currentTarget.files[0].path)    }  }}</script>/*  父组件*/<template>  <FormItem label="上传营业执照" prop="businessLicence">    <uploadImg :width="350" :height="200" :name="'license'" size="350px*200px" @changeUrl="getUrl"></uploadImg>  </FormItem></template><script>export default {  methods: {    getUrl(path) {      //这个就是你要的path,并且会双向绑定    }  }}</script>