Vue 点击添加生成一组输入框

场景：需要通过点击添加按钮，来增加一组输入框，填写信息。

通过for循环数据的方式实现，点击添加，向数组中增加一组数据

table数据

 <el-form-item label="请求头" :label-width="formLabelWidth">
          <div
            class="paramdatadiv"
            v-for="(item, i) in form.head"
            :key="item.id">
            <el-input class="divinput" v-model="item.head_key"></el-input>
            <el-input class="divinputs" v-model="item.head_val"></el-input>

            <el-button
              class="btn2"
              type="danger"
              @click="del_head(item.head_key)"
              v-show="!(form.head.length == i + 1)"
              >删除</el-button>

            <el-button
              class="btn2"
              type="primary"
              @click="add_head"
              v-show="form.head.length == i + 1"
              >添加</el-button>
          </div>
 </el-form-item>

data() {
    return {
      form: {
        head: [{ head_key: "", head_val: "" }]
      },
    };

add_head() {
      this.form.head.push({ keys: "", val: "" });
},