vue点击按钮自动获取input焦点

   <input
            type="text"
            :ref="value.id"
            @blur="editBlur"
            v-model="value.content"
            v-if="!value.isEditShow"
          />
    <button @click="updataItem(value.id)">
    </button>
...................................
    updataItem(val) {
      this.$nextTick(() => {
        //注意[0]
        this.$refs[val][0].focus();
      });
    },