点击按钮新增一行input文本框

                <el-col :span="7">
                  <el-form-item
                    :label="'联系电话' + (index + 1)"
                    :prop="'contactRelates.' + index + '.contactTelNumber'"
                    :rules="{
                      required: true,
                      message: '不能为空',
                      trigger: 'blur',
                    }"
                  >
                    <el-input v-model="domain.contactTelNumber" />
                  </el-form-item>
                </el-col>
                <el-col :span="7">
                  <el-form-item
                    :label="'职务' + (index + 1)"
                    :prop="'contactRelates.' + index + '.contactPost'"
                    :rules="{
                      required: true,
                      message: '不能为空',
                      trigger: 'blur',
                    }"
                  >
                    <el-input v-model="domain.contactPost" />
                  </el-form-item>
                </el-col>
                <el-col :span="2">
                  <el-button
                    type="danger"
                    icon="Delete"
                    circle
                    class="fr"
                    @click="removeDomainContact(domain)"
                  />
                </el-col>
              </template>
              <el-col :span="24">
                <el-form-item>
                  <el-button @click="addDomainContact">新增联系人</el-button>
                </el-form-item>
              </el-col>
            </el-row>
            
            
            // 添加其他联系人
        function addDomainContact() {
          form.value.contactRelates.push({
            contactPerson: "",
            contactTelNumber: "",
            contactPost: "",
            type: "2",
              });
            }
            const removeDomainContact = (item) => {
              const index = form.value.contactRelates.indexOf(item);
              if (index !== -1) {
                form.value.contactRelates.splice(index, 1);
              }
            };