修改数组中对象的key值

遇见场景：echart图表中后台返回我的数据，后台无法修改key值，但是echart渲染图表的时候，需要用

var m2R2Data= [
               {value:335,name:"种类01  335"},
               {value:310,name:"种类02  310"},
               {value:234,name:"种类03  234"},
               {value:154,name:"种类04  154"},
               {value:335,name:"种类05  335"},

            ];

这样的数组
后台返回我的数组如下：

personAlarm:[
   	0: {staticLibName: "VIP客户", staticCount: 1416}
	1: {staticLibName: "公司员工", staticCount: 2269}
	2: {staticLibName: "陌生人", staticCount: 7253}
	3: {staticLibName: "黑名单", staticCount: 10}
]

　　

     convertKey (arr, key) {
            let newArr = [];
            arr.forEach((item, index) => {
                let newObj = {};
                for (var i = 0; i < key.length; i++) {
                    newObj[key[i]] = item[Object.keys(item)[i]]
                }
                newArr.push(newObj);
            })
            return newArr;
        },
      //在需要的时候调用
      let ydata = this.convertKey(this.personAlarm, ['name', 'value']);
     //这样得到的就是echart可以渲染的数据了~