新增多条数据手动添加

<el-dialog title="配件更换" :visible.sync="dialogFormVisible" width="86%">
			<div class="bad">
				<div class="bad-item">
					<!-- <div>
						<h3>序号</h3>
					</div> -->
					<div>
						<h3>部件名称</h3>
					</div>
					<div>
						<h3>配件型号</h3>
					</div>
					<div>
						<h3>更换原因</h3>
					</div>
					<div>
						<h3>数量</h3>
					</div>
				</div>
				<div class="bad-item list" v-for="(item,index) in badData" :key="index">
					<!-- <div>
						<el-input :disabled="item.id?true:false" v-model="item.index" size="small"></el-input>
					</div> -->
					<div>
						<el-select v-model="item.fDevicePartId" placeholder="请选择" filterable @change="choosePartModel"
							@focus="elDatePickerOnFocus">
							<el-option v-for="(item, index) in GetDevicepartsList" :key="item.fid" :label="item.fName"
								:value="item.fid">
							</el-option>
						</el-select>
					</div>
					<div>
						<el-input style="100%" v-model="item.fPartModel" disabled size="small" placeholder="配件型号">
						</el-input>
					</div>
					<div>
						<el-input style="100%"  v-model="item.fReplaceReason" size="small" placeholder="请输入更换原因">
						</el-input>
					</div>
					<div style="display:flex; align-items: center;">
						<el-input style="90%" v-model="item.fQty" size="small" placeholder="请输入" type="number"
							oninput="if(value.length > 8) value = value.slice(0,8)"></el-input>
						<i @click="badFocus(item)" style="margin-right: 15px;" class="el-icon-plus"></i>
						<i @click="deleteBad(item,i)" :class="badData.length==1?'forbid':''" class="el-icon-delete"></i>
					</div>
				</div>
			</div>

			<div slot="footer" class="dialog-footer">
				<el-button @click="dialogFormVisible = false">取消</el-button>
				<el-button type="primary" @click="changePartsOK()">确定</el-button>
			</div>
		</el-dialog>

--------------------------
//追加
badFocus(item) {
				//最后一个，自动下一个
				let obj = {
					"fid": "",
					"fEntryId": "",
					"fDevicePartId": "",
					"fDevicePartName": "",
					"fPartModel": "",
					"fQty": '',
					"fReplaceReason": "",
					"fModel": "",
					sortNum: parseInt(item.sortNum + 1),
					index: parseInt(item.index + 1),
				};
				this.badData.push(obj);
			},
//删除
deleteBad(item, index) {
				this.badData.splice(index, 1);
			},