效果图

<FormItem label="输入项填充内容 :" prop="value" :rules="name1" style="margin-top: 20px">
            <Button type="success" @click="addKey">新增</Button>
            <table class="table">
              <tr>
                <th>key值</th>
                <th>value值</th>
                <th>操作</th>
              </tr>
              <tr v-for="(item,key) in keyValues" v-if="keyValueShow">
              <td>{{key}}</td>
              <td>{{keyValues[key]}}</td>
              <td><Button type="error" @click="keyDelete(key)">删除</Button></td>
            </tr>
              <tr>
                <td>
                  <FormItem>
                    <Input class="application-ipt" type="text" placeholder="输入内容" v-model="keyValue.key"></Input>
                  </FormItem>
                </td>
                <td colspan="2">
                  <FormItem>
                    <Input class="application-ipt" type="text" placeholder="输入内容" v-model="keyValue.value"></Input>
                  </FormItem>
                </td>
              </tr>
            </table>
          </FormItem>

添加属性 

 addKey(){
            if(this.keyValue.key==''){
              this.$Message.error('请输入key值');
            }else if(this.keyValue.value==''){
              this.$Message.error('请输入value值');
            }else{
              if(JSON.stringify(this.keyValues) !== '{}'){
                for(var k in this.keyValues){
                  if(k == this.keyValue.key) {
                    this.$Message.error('key值不能重复');
                    this.keyValue.key=''
                    return
                  }else{
                    this.keyValues[this.keyValue.key]=this.keyValue.value
                    this.keyValue.key=''
                    this.keyValue.value=''
                    //可以强制重新渲染页面
                    this.$forceUpdate();
                  }
                }
              }else{
                this.keyValues[this.keyValue.key]=this.keyValue.value
                this.keyValue.key=''
                this.keyValue.value=''
                this.$forceUpdate();
              }
            }
        },

 删除属性

 keyDelete(key){
          var keyValues = this.keyValues
          for (var k in keyValues) {
            console.log(k,key)
            if(k==key){
              delete keyValues[k]

            }
            this.keyValues=keyValues
            this.$forceUpdate();
          }
        },