axios请求里面返回promise

commonUseUrlGetMethod() {

                return new Promise((resolve, reject) => {

                                this.$api.commonPostApi(this.url,this.reqParams).then(res => {                                                                                        if (res) {   resolve(res.data);  }   })

                                                    .catch(err => {reject(err); })

                  }) 

}

// arry.map 返回obj里面指定的属性

example: 

var arr = [{a: 1,b:2}, {a: 333, b: 444}]; 

var dealArr = arr.map(item => {return item.a}) // 打印结果 （[1,333]);

// 循环往数组中插入对象时要确保每次都创建一个新的对象

res.forEach((item, index) => {

let itemObj = {};

itemObj['name'] = item.configuration_name;

itemObj['value'] = item.person_count;

seriesDataArr.push(itemObj);

})